Silly question. Just look at the calendar and put events on them. When did the Brandon regime take over and when did Putin invade?
The question is why did he wait, not did he wait. He waited because everyone in the world knew / knows Brandon has no idea what is going on, even in his prime he was dumb as a box of rocks, Brandon has never lead anything and is a follower who has always taken instructions from others, Brandon is totally and completely corrupt. Other than that, not sure why Putin would have waited.
Read-read.
Lead- led.