The UFOs are mostly spy drones (although it's still to early to say how many of them are - maybe all of them are?). These drones are more likely opportunistic t

The UFOs are mostly spy drones (although it's still to early to say how many of them are - maybe all of them are?). These drones are more likely opportunistic than tactical. Even the US response to them is valuable intelligence, as it has opened up the possibility of a DOS attack forcing the air force to waste missiles (which are not only expensive, but take time to replace). Under Putin, Russia is unlikely to resort to nukes so long as Ukraine doesn't storm actual Russian territory (as opposed to annexed land). If Putin were to be replaced, the new guy will likely be a hardliner, and then it's anyone's guess (although still leaning towards unlikely). America has already privately contacted all levels of the Russian government to spell out the consequences of nukes, and enough people in government (including Putin) still fear America's direct involvement in this war (rhetoric notwithstanding). No nation can ever be allowed to actually use nukes in conquest; the ensuing arms race as every despot rushes for their own immunity to the American military would be catastrophic.