American meddling in Iran is well documented including putting in place a puppet in the form of the Shah who was eventually deposed. You cannot go into regions, kick up some sand and expect there will be no repercussions. But many Americans are not cognisant of their own history and won't bat an eyelash if there is military action against Iran. This is most true of those right wingers who get erections every time the US employs some military muscle.
Apparently sanctions just aren't enough for the John Bolton types.
For example, that patriotic fossil Lou Dobbs from FOX was getting all wet recently when he heard draft dodger Trump was going to bring out the tanks on the 4th.
Jingoism at it's best.