Proposed annexations

Since 2025, the second Donald Trump administration of the United States has sought to annex Greenland, an autonomous territory of Denmark, triggering an ongoing international diplomatic crisis. This escalated in early 2026 after Trump refused to rule out the use of military force to annex Greenland and threatened a 25% import tax on goods from several European nations unless Denmark ceded Greenland. Trump's statements sparked a confrontation with Denmark and the EU, reigniting earlier concerns of a US–EU trade war. On 21 January, Trump reversed his position at the 2026 Davos conference, pledging not to use force or tariffs to annex Greenland.

The United States has discussed obtaining Greenland from Denmark since the 19th century. There were talks within the US federal government about purchasing Greenland in 1867, advocated by secretary of state William H. Seward, and again in 1910. However, in 1916, the United States proclaimed their recognition of Danish sovereignty over all Greenland as a condition for their purchase of the Virgin Islands in the Treaty of the Danish West Indies. Since World War II, the US has had at least one military base in Greenland. In 1946, the US secretly offered to buy Greenland, but it was rejected by Denmark. Since 1949, Greenland has been under the protection of NATO, of which the US and Denmark are both members. Nevertheless, the Joint Chiefs of Staff proposed acquiring the island in 1955. In the 21st century, Donald Trump proposed acquisition of Greenland during his presidency.

South Korean government committee officially responsible for the administration of the five provinces controlled by the North Korean government

2025 proposal by Donald Trump

proposed Russian annexation of part of Moldova

annexation of part of Georgia

proposed expansion of the U.S. by Donald Trump

proposed Czechoslovak colony in Africa

campaigns in favor of USA annexation of Canada

proposals to assume sovereignty over occupied Palestinian territory

plans to annex German territory