Donald Trump's Sept 2013 Tweet directed to Pres. Obama - wisely telling him to not start a war in Syria. Trump's campaign promise of stopping the US's costly on all levels, "endless wars" / "regime change" policies of the D.C. establishment, was a key factor in gaining him his historic upset victory in the 2016 election.
America’s credibility was damaged by Colin Powell at the United Nations in 2003 falsely accusing Saddam Hussein of having mobile anthrax laboratories. Fast forward to 2017 and we encounter Nikki Haley in an uncomfortably similar situation at the U.N. Security Council calling for action against yet another non-Western head-of-state based on weak, unsubstantiated evidence.