Geopolitics today

TL;DR. This chapter pulls back from individual countries to look at the big picture of world power in the two regions this book covers, East Asia and Europe, as it stands in early 2026. In East Asia, the central story is the rise of China as an economic and military giant, and its rivalry with the United States, the country that has been the leading power in the region since 1945. The most dangerous question is the future of Taiwan, a self-governing democracy that China claims as its own. Japan and South Korea remain close allies of the United States, while North Korea is an isolated, nuclear-armed state. In Europe, two big frameworks shape life: the European Union, which ties countries together economically and politically, and NATO, a military alliance led by the United States. Russia's full-scale invasion of Ukraine in 2022 shook the continent, pushed Finland and Sweden to join NATO, and forced Europe to rethink its security and energy. Across the world, the contest between the United States and China is widely described as the defining rivalry of the era. The future is genuinely uncertain, and alliances can shift.

Key takeaways

• The biggest single theme in world affairs today is the competition between the United States, the established superpower, and China, the fast-rising one. It plays out in trade, technology, military strength, and global influence.
• Taiwan is the most dangerous flashpoint in East Asia. China claims it; Taiwan governs itself as a democracy; the United States keeps its exact response to an attack deliberately vague, a stance called "strategic ambiguity."
• In East Asia, Japan and South Korea are democracies allied with the United States. North Korea is a closed, nuclear-armed state. China and the United States are the two main rivals.
• In Europe, NATO (a military alliance) and the European Union (an economic and political union) are different things with overlapping but not identical members.
• Russia's 2022 invasion of Ukraine reshaped European security. Most European countries back Ukraine; Russia is largely isolated in the West but keeps ties with some other powers.
• Two things are true at once between the United States and China: their economies are deeply linked, and their governments are serious rivals. That mix is what makes today so complicated.

How to read this chapter

The earlier chapters in this book each took one country or theme and followed it through time. This chapter does something different. It zooms out and asks: as of early 2026, who holds power, who is lined up with whom, and what are the main flashpoints?

A few warnings before we start. This is a snapshot of a moving picture. Some of the events described here are still unfolding as you read, and the situation may have changed. On the most contested issues, such as the United States and China rivalry, Taiwan, and the war in Ukraine, this chapter tries to lay out the main positions fairly rather than take a side, and to say clearly who is claiming what. Where a statement is contested, it is presented as a claim made by a particular government or group, not as a settled fact.

East Asia: a changing balance of power

For roughly seventy years after the Second World War, the United States was the strongest outside power in East Asia and the Pacific. It kept large military forces in Japan and South Korea, guarded sea routes, and backed friendly governments. That arrangement is now being tested by the rise of China.

China's rise and its rivalry with the United States

China is home to more than a billion people. Starting in the late 1970s, it opened its economy to trade and private business while keeping its political system under the tight control of one party, the Chinese Communist Party. The result was decades of very fast growth that lifted hundreds of millions of people out of poverty and turned China into the world's second largest economy, after the United States. (For the longer story, see the chapter on China.)

With wealth came strength. China built a large, modern military, including a growing navy, and it now spends more on defense than any country except the United States. It also expanded its influence abroad through trade, loans, and big building projects in Asia, Africa, and beyond, an effort often called the Belt and Road Initiative.

This has created a rivalry with the United States that touches almost everything:

• Trade. The two countries buy and sell enormous amounts to each other, yet they also fight over tariffs (taxes on imported goods), unfair-trade complaints, and access to each other's markets.
• Technology. Both governments see advanced technology, especially computer chips (semiconductors) and artificial intelligence, as the key to future power. The United States has restricted the sale of some advanced chips and chip-making equipment to China, arguing this protects its security. China is working hard to build its own.
• Influence. They compete for friends and partners across the world, offering trade deals, investment, and security ties.

The United States and several partners describe their goal in the region using the word "Indo-Pacific," a term meant to link the Indian and Pacific Oceans into one strategic space. The United States, Japan, Australia, and India hold regular talks together in a grouping called the Quad. China views some of these efforts as attempts to contain it, a charge the United States denies, saying it seeks a free and open region.

Don't be confused: economic partners and political rivals can be the same two countries. It is tempting to assume that if two countries trade heavily, they must be friends, or that if they are rivals, they must be cut off from each other. The United States and China show that both can be true at once. Their companies and consumers depend on each other for goods, parts, and customers, while their governments compete hard over security, technology, and influence. This mix of deep economic links and serious political distrust is one of the defining features of the present moment.

Taiwan: the most dangerous flashpoint

Taiwan is an island of about 23 million people off the coast of mainland China. It governs itself, holds free elections, and has a free press, all the features of a democracy. The government in Beijing, the People's Republic of China (PRC), considers Taiwan to be part of China and says it must eventually be unified with the mainland, by force if necessary. Taiwan's government and most of its people, polls suggest, prefer to keep their separate, self-governing way of life. (The full history is in the chapter on Taiwan.)

This is widely seen as the single most dangerous flashpoint in East Asia, because a conflict there could draw in the United States and turn a regional crisis into a war between major powers. China has increased military pressure on Taiwan in recent years, including frequent flights of warplanes near the island and large naval exercises, which Beijing presents as warnings and Taipei calls intimidation.

The United States walks a careful line. It does not formally recognize Taiwan as an independent country, and it officially maintains a "One China" policy. At the same time, it sells weapons to Taiwan and has long kept its answer to one crucial question deliberately unclear: would American forces fight to defend Taiwan if China attacked? This deliberate vagueness is called strategic ambiguity. The idea is to discourage China from attacking, while also discouraging Taiwan from formally declaring independence in a way that might trigger a war. Critics argue the policy is risky and outdated; supporters say it has helped keep an uneasy peace for decades.

Taiwan matters to the wider world for another reason: it makes a very large share of the world's most advanced semiconductors, the tiny chips that run phones, cars, computers, and weapons. A disruption there would ripple through the global economy. We return to this point at the end of the chapter.

Japan, South Korea, and the United States alliance

Two of East Asia's wealthiest democracies, Japan and South Korea, are close allies of the United States, which keeps military bases in both. This alliance is the backbone of the American position in the region.

Japan spent the decades after the Second World War as a deliberately pacifist country. Its postwar constitution renounced war, and for a long time it kept its military small and strictly defensive. In recent years, worried by China's growing power and by North Korea's missiles, Japan has begun to rethink that posture. It has announced large increases in defense spending and is debating what role its forces should play. This is a gradual shift, and it remains a subject of real debate inside Japan. (See the chapter on Japan.)

South Korea is a vibrant democracy and a major economy, home to well-known companies in cars, electronics, and entertainment. It lives next to a difficult neighbor, North Korea, and relies on its alliance with the United States for security. Japan and South Korea are both American allies, but their own relationship has been strained at times by painful history, including Japan's past colonial rule over Korea. In recent years the two have worked, with American encouragement, to cooperate more closely.

North Korea and the divided peninsula

Korea was split in two after the Second World War. The Korean War (1950 to 1953) ended in a ceasefire, not a peace treaty, so the two Koreas are technically still at war, separated by one of the most heavily guarded borders on Earth.

North Korea is a closed, tightly controlled state ruled by the Kim family for three generations. It is poor and isolated, yet it has built nuclear weapons and missiles capable of reaching far beyond its borders, in defiance of international objections. Many governments, including the United States, South Korea, and Japan, see this as a serious threat. Efforts to persuade North Korea to give up its weapons, through both pressure and negotiation, have so far not succeeded. North Korea's main external partner is China, with which it shares a border, and it has also strengthened ties with Russia.

Maritime disputes: the South China Sea

The South China Sea is a large, busy stretch of ocean through which a huge volume of world trade passes. Several countries border it, including China, Vietnam, the Philippines, Malaysia, and Brunei, and several of them claim overlapping areas of sea, islands, and reefs.

China claims a very large portion of these waters, drawing a line that overlaps with the claims of its neighbors. It has built artificial islands and military installations on some reefs. Other countries dispute these claims. In 2016 an international tribunal ruled against the legal basis of China's broad claim in a case brought by the Philippines; China rejected the ruling. The United States, which is not a claimant, regularly sails warships through the area to assert that these are international waters open to all, operations it calls "freedom of navigation." China objects to these patrols. The dispute matters because it mixes national pride, valuable fishing and energy resources, and control over vital shipping lanes.

Europe: two frameworks and a war

Europe's story today runs through two big organizations and one major war. Understanding the difference between the organizations is the first step.

NATO and the European Union: not the same thing

People often blur these two together, but they are different, with different jobs and not-identical membership. (Their origins are covered in the chapter on The Cold War and the European Union.)

• NATO, the North Atlantic Treaty Organization, is a military alliance founded in 1949. Its core promise is that an attack on one member is treated as an attack on all. It includes the United States and Canada along with many European countries. Its purpose is collective defense.
• The European Union (EU) is an economic and political union of European countries. It runs a shared single market, most members use a common currency (the euro), and it makes many rules together. Its purpose is cooperation and integration, not military defense.

Don't be confused: NATO and the EU overlap, but they are not the same club. Many countries belong to both, but not all. The United States is in NATO but not the EU. Ireland and Austria are in the EU but not NATO. The United Kingdom is in NATO but left the EU. So when you hear that a country is "in NATO," that is a statement about military defense led with the United States. When you hear it is "in the EU," that is about a shared economy and shared rules among European states. Keeping the two ideas separate will save you a lot of confusion.

Russia's war in Ukraine and its aftermath

In February 2022, Russia launched a full-scale invasion of its neighbor Ukraine. This followed Russia's seizure of Ukraine's Crimea region in 2014 and years of fighting in eastern Ukraine. The 2022 invasion was the largest war in Europe since 1945.

Here it is especially important to be clear and factual. The governments of Ukraine, the United States, most European countries, and many others describe the invasion as an unprovoked act of aggression and a violation of international law, and the United Nations General Assembly voted by a large majority to condemn it. Russia's government presents the war differently, describing it as a necessary "special military operation" to protect Russian-speaking people and to stop what it calls NATO's expansion toward its borders. Most Western governments reject that justification. As of early 2026 the war is continuing, with very heavy casualties on both sides and no settled peace.

The war reshaped Europe in several ways:

• Security. It ended a long period in which many Europeans assumed a big land war on the continent was unthinkable. Countries that border or sit near Russia felt newly threatened.
• Alliances. Finland and Sweden, two countries that had stayed militarily neutral for decades, decided to join NATO, which they did in 2023 and 2024. This is a major shift: Russia's stated aim of pushing NATO back instead led NATO to grow, and to gain a long new border with Russia through Finland.
• Energy. Much of Europe had relied on Russian natural gas. After the invasion, Europe scrambled to cut that dependence, buying gas from other suppliers and pushing to use less, which raised energy prices and added urgency to plans for cleaner energy.
• Defense. Many European governments announced large increases in military spending, reversing decades of decline. Germany in particular announced a historic shift toward rebuilding its armed forces.

Most of Europe and the United States have backed Ukraine with money, weapons, and sanctions on Russia. The level of that support, and how long it can last, is an active political debate within several countries, including the United States. Russia, for its part, is largely cut off from the West but has kept and in some cases deepened ties with other powers, including China, Iran, and North Korea. So in broad terms, on this issue, the lineup is Ukraine and most Western countries on one side, and Russia with a smaller set of partners on the other.

Internal challenges inside Europe

Europe also faces strains that come from within, not from any outside enemy. None of these is simple, and reasonable people across Europe disagree about them.

• Populism and the far right. In many countries, parties often described as populist or far right have grown stronger. They tend to be skeptical of the EU, critical of immigration, and focused on national identity. Supporters say these parties give voice to people who feel ignored; critics worry about their effect on democratic norms and on the rights of minorities.
• Migration. Europe has seen large movements of people seeking safety or a better life, from the Middle East, Africa, and elsewhere. How many to admit, how to share responsibility among countries, and how to treat those who arrive are among the most divisive questions in European politics.
• Energy and the economy. The shift away from Russian energy, the cost of living, and the challenge of staying competitive against the United States and China all weigh on European governments.
• Brexit's aftermath. The United Kingdom voted in 2016 to leave the EU and formally left in 2020. Years later, both the UK and the EU are still working out their new relationship, and the long-term effects are still being debated. (See the chapter on the United Kingdom.)
• Questions about unity. With 27 member countries, the EU often struggles to agree and to act quickly. Whether it can hold together and act as one on big issues, from defense to the economy, is an open question.

Global threads

Pull the pieces together and a few large patterns stand out.

The competition between the United States and China is widely described as the central rivalry of this era, the one around which much else turns. It is not a repeat of the Cold War between the United States and the Soviet Union, because the United States and China are economically intertwined in a way the old rivals never were. But it shapes choices for countries all over the world, many of which would rather not have to pick a side.

The other major powers each play a part. Russia, weakened economically and isolated from the West by its war in Ukraine, has drawn closer to China. The European Union is an economic heavyweight that is trying to find a stronger, more united political and military voice, while staying closely tied to the United States through NATO. And a set of rising powers, above all India, along with countries like Brazil, Indonesia, and others, are growing in weight and often prefer to keep their options open rather than line up firmly behind either the United States or China.

Running underneath all of this is globalization, the decades-long process by which trade, money, technology, and people have become more connected across borders. Globalization made the world richer and more linked, but it is now under strain. Rivalry between great powers, the shocks of a pandemic, and wars have pushed governments to worry about supply chains, the networks of factories and shipping that turn raw materials into finished goods. Many now want key products to be made closer to home or among trusted partners, rather than wherever is cheapest.

Nothing shows this better than semiconductors, the advanced computer chips mentioned earlier. They are essential to modern life and modern weapons, and a large share of the most advanced ones are made in a small number of places, with Taiwan at the very center. That single fact ties together several threads of this chapter: the United States and China technology contest, the danger surrounding Taiwan, and the worldwide scramble to make supply chains more secure. It is a good example of how economics, technology, and military risk are now woven tightly together.

A closing thought

It is worth ending with some honesty about the limits of any snapshot. The arrangements described here, who is allied with whom, who is rising and who is fading, are not fixed. Alliances shift, leaders change, economies rise and stumble, and events that no one predicted can rearrange the board quickly. The Russia of the early 2000s once spoke of joining the Western order. Finland and Sweden stayed neutral for generations before joining NATO in the space of two years. Patterns that feel permanent often are not.

What seems clear in early 2026 is that the world is moving away from a single dominant power and toward a contest among several, with the United States and China at the front. How that contest unfolds, whether through managed competition, cooperation where interests overlap, or open conflict, is one of the great open questions of our time. History does not tell us the answer in advance. It only reminds us that the answer is not decided yet.

A combined timeline (A combined timeline) 👉