Trump has attempted to rescind, refuse to sign, and threaten to veto various sanctions against Russia, caving in when the REAL powers that be told him that ain't happening. That's multiple times of getting his ass beta cuck branded.
Obama was behind an anti-nuke deal that got Iran in line. They got nothing in return, not even loosening of sanctions, only the hope that said sanctions might be relaxed if they keep their end of the bargain. The only money they got was their own from US bank accounts frozen in 1979.
Iran did not attack any embassies, US or other, before and during Obama's 2 two terms.
The Bay of Tonkin attacks that no one on Planet Earth beiieve Iran had anything to do with happened under Trump's watch, alleged to be a response to him not resigning the nuclear deal.
Trump threatened Iran, staged a fake assassination, and stood down on the brink of war after Iran hit an Iraqi base with Americans in it - Americans that Trump first claimed were evacuated prior, then just got bad headaches on account of getting blown up, then admitted to them sustaining brain injuries but nothing more because none could have possibly died on Trump Planet 1984 after missiles blew them up.
Trump also threatened Iran prior in response to their alleged (and bogus) attacks on a Saudi oilfied, Yemen, and a Japanese tanker. As with the last, he failed to follow through.
He also threatened North Korea and gave them a whole barrel of exchanges in exchange for a .... love letter.
Pal, you need to relearn your AlphaBeta.