Explained in plain English

Why did Sweden join NATO?

Sweden, historically neutral, joined NATO in 2024, largely due to Russia's invasion of Ukraine. This move marked a significant shift in European security, aligning Sweden with the collective defence principle that Trump's recent demands for 'loyalty' have brought into focus for existing members.

Stories that explain this

Trump tells NATO allies he wants loyalty, not money

Related explainers

Why did Finland join NATO? Which countries joined NATO recently? How are NATO decisions made? Who are NATO members? What is NATO, really? Is NATO zero-sum? Can one country veto NATO action? What is Article 5?

The full catalogue

Browse every card filed under S →