President Donald Trump is set to discuss US withdrawal from NATO with Secretary-General Mark Rutte, sparking concerns over the alliance's future.
The US has laws in place that prevent the president from taking unilateral action in exiting the military alliance, requiring Congressional and Senate-level clearances.
However, as commander-in-chief, Trump could withdraw troops or move them as he sees fit, potentially leaving NATO without US military help.
The NATO treaty allows any member nation to exit the alliance, but the US would have to give a one-year notice to the US government, which would then inform other allies.
