The US should leave NATO. The conflict with Ukraine and Russia was sparked in part by NATO expansion eastward over the last couple decades and US intervention in Ukrainian politics. There are persistent rumors of CIA involvement in the 2014 revolution and Ukraine/Russia war then. This doesn't excuse Putin's invasion, but it does help explain it. The Hunter Biden laptop story still demonstrates Biden family involvement in Ukrainian corporate and government interests in a downright corrupt relationship.
It should offer some hope that Russia is bogged down so severely in Ukraine as it stands, and if they overextend into other former Soviet satellites, it will spark open conflict with Poland, Germany, and other EU nations whether the US is still involved or not. With more US participation, nuclear war is on the table, and that is not acceptable. If the US arsenal is out of the picture, Russia still faces European nuclear power, but less incentive for ICBM mutually-assired destruction.
On a simple practicality basis, the US cannot afford to be taxed and indebted further by foreign wars. I still think Harris would have been more likely to lead from the current simmering unrest to open war across eastern Europe based on her association with the Cheneys, but only time will tell what Trump will do, and the counterfactuals are impossible to guess.
RE: Trump: A Best-Case Scenario