There are more than 150 active territorial disputes on Earth right now. Most people can name three — maybe Kashmir, maybe Crimea, maybe something in the South China Sea. The rest exist in a strange geopolitical limbo: lines on maps that two or more governments disagree about, sometimes violently, while the rest of the world goes about its business unaware that the borders it sees on Google Maps are somebody’s political opinion rather than settled fact. Some of these disputes involve nuclear-armed states. Some involve resources worth trillions. Some involve populations that have been stateless for decades. And some involve patches of frozen ground so remote that the only regular visitors are researchers and penguins. Here are the ones worth understanding — not ranked by severity, because severity depends on whether you’re measuring by geopolitical risk, resource value, human displacement, or the simple question of how many people live in a place two governments simultaneously claim to own.
The ones you’ve probably heard of, updated
Kashmir remains the world’s most militarized territorial dispute. India controls approximately 55 percent of the land area and 70 percent of the population, including Jammu, the Kashmir Valley, most of Ladakh, and the Siachen Glacier — the highest battlefield on earth, where Indian and Pakistani soldiers have been stationed above 20,000 feet since 1984. Pakistan controls roughly 30 percent, including Azad Kashmir and Gilgit-Baltistan. China controls the remaining 15 percent — Aksai Chin and the Trans-Karakoram Tract — after Pakistan ceded it in 1963, a transfer India has never recognized. In May 2025, India launched Operation Sindoor following a terrorist attack in Pahalgam that killed 26 tourists, resulting in a four-day aerial engagement between Indian and Pakistani forces — 114 aircraft engaged, cruise missiles used between the two nuclear-armed nations for the first time. An October 2024 agreement between India and China on Line of Actual Control patrolling at Depsang and Demchok has held, but both sides continue building military infrastructure along the disputed Himalayan border.
The South China Sea dispute involves six claimants — China, Vietnam, the Philippines, Malaysia, Brunei, and Taiwan — over an area that carries roughly one-third of global shipping traffic. China’s “nine-dash line” claim covers approximately 90 percent of the sea, a claim the Permanent Court of Arbitration ruled had no legal basis in 2016. China rejected the ruling. It has constructed and militarized seven artificial islands in the Spratly archipelago, complete with airstrips, radar installations, and missile batteries. The Philippines has pushed for an ASEAN-China code of conduct, which remains unfinished. Incidents between Chinese coast guard vessels and Philippine ships near the Second Thomas Shoal have become routine.
Crimea and eastern Ukraine represent the most consequential border revision by force in Europe since 1945. Russia annexed Crimea in 2014 and subsequently occupied portions of the Donetsk, Luhansk, Zaporizhzhia, and Kherson oblasts. The frontline remains active. The international community overwhelmingly does not recognize the annexation or the occupation, but de facto control is a different question than legal recognition, and Russia shows no indication of withdrawal.
The ones you probably haven’t
Western Sahara is one of the longest-running territorial disputes on earth and receives almost no sustained international attention. Spain withdrew from the territory in 1976. Morocco immediately annexed it, constructing the Berm — a 2,700-kilometer military sand wall, the second-longest wall in the world after the Great Wall of China — to divide the territory between Moroccan-controlled areas to the west and Polisario Front-controlled areas to the east. The Sahrawi Arab Democratic Republic, backed by Algeria, claims sovereignty. The United Nations classifies Western Sahara as a non-self-governing territory. Forty-seven UN member states recognize the Sahrawi republic’s independence. The United States under Trump recognized Moroccan sovereignty in 2020 in exchange for Morocco normalizing relations with Israel. The territory contains the world’s largest phosphate reserves and rich fishing waters — resources Morocco extracts and the Polisario Front considers theft.
The Kuril Islands dispute between Russia and Japan has been active since 1945 and prevents the two countries from signing a formal peace treaty ending World War II. The Soviet Union seized the four southernmost Kuril Islands — Iturup, Kunashir, Shikotan, and the Habomai group — in the final days of the war. Japan calls them the Northern Territories and considers their seizure illegal. Russia considers them sovereign Russian territory. Approximately 20,000 Russian citizens live there. Japan’s population of the islands prior to 1945 — roughly 17,000 — was entirely expelled. No resolution is in sight, and the dispute has hardened since Russia’s invasion of Ukraine eliminated any diplomatic goodwill between the two countries.
The Essequibo dispute between Venezuela and Guyana escalated dramatically in late 2023 when Venezuela held a referendum on annexing the Essequibo region — a territory comprising roughly two-thirds of Guyana’s total land area. The region contains significant offshore oil reserves (ExxonMobil’s Stabroek block, producing over 600,000 barrels per day by 2025) and is rich in gold and timber. Venezuela massed troops on the border. Guyana, which has no military capability to resist a Venezuelan invasion, relies on international pressure and the presence of Western oil companies as a deterrent. The International Court of Justice is hearing the case but has no enforcement mechanism.
The Senkaku Islands — called the Diaoyu Islands by China — are eight uninhabited rocks in the East China Sea that Japan administers and both China and Taiwan claim. On February 10, 2026, four Chinese Coast Guard vessels entered Japanese territorial waters near the islands, two near Uotsuri Island and two near Taisho, departing after approximately two hours. These incursions are now routine — dozens per year — and each one tests the credibility of the U.S.-Japan security alliance, because the islands fall under Article 5 of the mutual defense treaty.
The Golan Heights, seized by Israel from Syria in 1967 and formally annexed in 1981, was recognized as Israeli territory by the United States in 2019. Almost no other country recognizes the annexation. The Syrian civil war and the collapse of the Assad regime in late 2024 have made the question of “returning” the Golan to Syria effectively moot — there is no functioning Syrian government with the capacity to administer it — but the legal dispute remains unresolved.
Nagorno-Karabakh is now a resolved dispute in the most brutal sense: Azerbaijan recaptured the territory in September 2023 through a military offensive that lasted 24 hours, and the entire ethnic Armenian population — approximately 120,000 people — fled. A region that had been disputed for decades and fought over in two wars is no longer disputed because one side’s population has been entirely displaced. Whether that constitutes resolution or ethnic cleansing depends on who’s talking.
And then there’s Hans Island — a 1.3-square-kilometer rock in the Nares Strait between Canada and Greenland (Denmark) that was the subject of a 49-year dispute resolved in 2022 by splitting the island in half, creating the only land border between Canada and a European country. The resolution was celebrated with bottles of Canadian whisky and Danish schnapps left at each other’s border markers. Not every territorial dispute ends with cruise missiles.
Why it matters
Disputed borders are where the world’s legal order meets its physical reality, and the gap between the two is wider than most maps suggest. The South China Sea’s artificial islands are military installations built on land that an international court says doesn’t belong to the country that built them. The Arctic’s continental shelf claims overlap across five nations’ exclusive economic zones in waters that are only now becoming navigable due to melting ice. The water resources that flow through disputed Kashmir feed agriculture for hundreds of millions of people downstream in India and Pakistan. The borders that look settled on a map are often the ones where the most is at stake — and the ones most people haven’t heard of are often the ones closest to producing the next crisis.
We cover disputed borders, forbidden zones, undersea cable warfare, and the geopolitics of infrastructure that most people never see across our Atlas of Non-Existent Places course — where the map is never the territory, and the territory is always more complicated than the map.
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