Explained in plain English
Why did Finland join NATO?
Finland, historically neutral, joined NATO in April 2023, largely due to Russia's invasion of Ukraine. This dramatically shifted its security policy, moving away from its long border with Russia, which was previously seen as a buffer. Their decision highlights how geopolitical events can reshape a nation's stance on alliances like NATO, which Trump is now demanding loyalty from.
Stories that explain this
Trump tells NATO allies he wants loyalty, not moneyThis explainer came from a news story
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