In the map below, every country shaded in red is involved in a territorial dispute of some kind. Yellow markers represent disputed territories.
Territorial disputes include border disagreements, unrecognized / self-declared states, disputed islands, maritime boundaries, non-self governing territories, and land annexed during war.
The term territorial dispute brings to mind global-scale conflicts in famously contentious regions such as Palestine, Crimea, and Kashmir. But in reality, most territorial disputes are far more mundane, many characterized more by their seeming insignificance than by their importance in world geopolitics.
For over 200 years, the U.K., Ireland, Denmark, and Iceland have waged a diplomatic battle for control of Rockall Island, a barren 8,000 square-foot rock in the middle of the North Atlantic, hundreds of miles from the nearest human settlement.
Similarly, Canada and Denmark (Greenland) remain engaged in a century-long conflict over Hans Island, an uninhabited slab of rock measuring half a square mile in size, located in the arctic waters of the Kennedy Channel, near the two countries' northern boundaries.
Multiple nations assert overlapping claims on Hans Island and Rockall Island
Nearly every major nation in the world is involved in a territorial dispute of some kind, though some more than others. At the top of the list is China (13 disputed territorial claims), followed by India (11), France (9), Russia (8) and the U.S. (7).
China is engaged in 13 territorial disputes involving 8 of its neighbors
These maps originally appeared on Metrocosm:
Information sources / credits include: The CIA World Factbook, Natural Earth, Quartz, Knight-Mozilla-MIT Open Internet Hackday, Wikipedia, and Mapbox Studio.