> geee how would we spot an entire convoy of enormous metallic vehicles under a cold, non-reflective trees with all the SAR, ISR and other imaging satellites we send up
Just send a small, stealthy cruise missile. Or since its way behind protected front lines, not in heavy fortified missile bases or similar an asset on pit-bike with RPG could take one out when needed.

DESU seeing how panicky Russia barks about their nukes and how nonchalantly formal everyone else is I'm convinced US has long developed reliable defenses and their biggest concern is - should the respond if Russia tries anything and how long and dirty would following land war be. So they're just keeping up the charade to keep things calm.