Crimea, Crimea and Ukraine Blinked?

When crimea was annexed, i remember being sortof, again, just shocked, of like, with the fuck russia can just walk in and nowhere does anything. But compared to the sanctions and the response that's happened now, back then it was effectively nothing. It really was almost a passive t over. Ea, yes, they have brought troops and things in. But it wasn't, we're going to put a hundred thousand troops on the border and have them sit there for two months. No, it was just, we're taking over crimea and ukraine blinked when. How did that happen? Wasn't it a little green men thing of effectively, r