The Europeans are really relaxed and save on army. Right Trump forces them to increase spending, but I am sure that soon with NATO, nothing will happen because any attempt by Trump to go beyond words in relation to NATO will be regarded as a blow to us security. There has not only impeachment and there is already a prison can end.
Nothing is going to happen. The American public do realize that NATO is very important for the national security. But at the same time they agree with Trump in asking the other NATO members to contribute.
NATO is NOT important for anyone but USA.
Or at least not for anyone in the EU.
It's just that our politicians are too stupid to say fuck off to the Americans. There is no reason for us to stay in NATO, on the contrary it's very dangerous to be in it :/