Board Thread:General Discussion/@comment-24670104-20161105144032/@comment-25982945-20161105190539

I think Zemo kept an eye on the whole situation for months.

He knew tensions were already here. Some people already feared the Avengers, the Accords were probably on government's minds before the Lagos incident. What happened helped the coming of the SA. It was one month before Zemo framed Bucky. So I don't believe he planned Crossbones' attack, but the result fited with Zemo's agenda.