As Sweden officially becomes a member of NATO, concerns have arisen over former U.

S. President Donald Trump's recent comments questioning America's commitment to defending its allies within the alliance.

During his campaign, Trump has suggested that NATO is "obsolete" and "very unfair to the U.

S.," especially criticizing member countries for not contributing enough financially.

This has sparked fears among European capitals that they might soon have to fend for themselves without U.

S. military support.

The situation has prompted discussions in Sweden about the necessity of joining the eurozone to strengthen its position within the EU, especially in light of a potentially more isolationist U.

S. under Trump's leadership.

Experts warn that a decrease in U.

S. engagement with NATO could lead to significant turmoil within the alliance.