Hybrid warfare

type of war, warfare and a theory of military strategy

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.

failure of Estlink 2 cable

alleged and confirmed Russian-linked sabotage incidents across Europe since 2022

terror group

various types of cyberwarfare used by Russia against many nations