Sweden was spurred to join NATO in response to the security threat posed by Russia following its invasion of Ukraine. It has sent its troops to Latvia, which borders Russia and its ally Belarus. As a former Soviet republic, Latvia has highlighted the threat posed by Moscow after the war in Ukraine.

Germany met NATO's target to spend 2% of its gross domestic product on defence in 2024, the government said on Monday, though well short of incoming U.S. President Donald Trump's call for as much as 5%.

President Trump vowed that the State Department will have an "America first" foreign policy. Nick Schifrin discussed how the world is responding to Trump's inauguration with Jens Stoltenberg, the most recent secretary general of NATO who will become the chairman of the Munich Security Conference next month.

Russia is rearming faster than first thought for a potential attack on Nato, Germany’s military pointman on Ukraine has warned.

Polish authorities had said on Wednesday that fighter jets were scrambled after "intense long-range aviation activity" was detected from Russia.

Congress passed legislation that a president cannot unilaterally withdraw from NATO, setting up a major legal fight if Trump tries to pull the US out.

Hundreds of Swedish troops have arrived in Latvia to join a Canadian-led multinational brigade along NATO’s eastern flank.

Russia is believed to be behind dozens of hybrid attacks, like arson or sabotage, on NATO soil since the Ukraine war started.

Andrzej Duda is the president of Poland, an increasingly important economic and geopolitical force in Europe. On Tuesday, Jan. 21, Duda joins Washington Post columnist David Ignatius to discuss the war in Ukraine,

It may be too extreme for Canada or Denmark to view the U.S. as an enemy in the wake of Trump annexation threats, but the line between enmity and amity is currently blurred.

NATO announced on Tuesday that it will beef up its patrol of the Baltic Sea in the light of past infrastructure damage to cables on the sea floor.