This really depends on whether Iran is committing aggression against the US and/or its allies. However, I'd not believe anything that Trump says re. this situation, since he lies about 99% of things that he says. If we go to war with Iran we need international proof that Iran has committed acts that would justify a war. Given our experience with George W. Bush who lied and got us into a baseless war, we should be very cautious re. what this administration says that would get us involved in another endless war.