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Which means, no longer trusting American.
By wasting money you mean selling weapons and giving away old military equipment that it more expensive to destroy than to ship away?
Also, the conflict is in America's concern since the United States has pledged to guarantee Ukraine's security in the Budapest Memorandum of 1994. A pledge is a pledge, no matter if you like it or not.
But to your point, as a random European resident, it's not upsetting that the US is pulling back, it's upsetting that it's pulling back with so little regard for anything else. If this was the only thing, fine, i wouldn't agree but it's your call, but look at all the other stuff happening at the same time in your foreign policy and ask yourself why all those "wasteful" things existed in the first place.
What has happened in the US could happen to us and we must prevent that while we hope that more sensible people eventually prevail there.
Europe downplayed investment in military capacity because this was seen and agreed as the best way to reduce the risk of WWIII.
Europe also realized that building things is better than destroying things. Is it spineless to do this? Question to you, mavdi, did you volunteer to serve in the armed forces? If not, do you view yourself as spineless for this decision?
Friedrich Nietzsche