The world may be more "uncertain", but Trump withdrawing from the ""deal"" that Iran was not abiding by isn't responsible. Iran is responsible for its own actions.... and they are a murderous, terrorist-supporting, America-hating regime.
They burned the American flag before and they burn the American flag now. The only
real thing that has changed is ... now it's Iran that's "uncertain" ....whether or not Trump will kick their collective @sses. I'm betting he will.