NATO did not do anything substantial nor does it have any obligation to do something. There was one (always the same) NATO country claiming that the ivasion is definitely going to happen and they were wrong.
Does US leadership have an infinite reserve of credibility so that no matter how many times they are wrong or don't have a convincing case in the first place, they are to be trusted?
Russia evacuated their embassy in Kyiv.
This is not American hearsay, the entire world is looking at this. The satellite images clearly show the military buildup. The exercices are used as a cover to deploy additional capabilities, but they don't cover much.