By Matt Spetalnick WASHINGTON, July 8 (Reuters) - U.S. President Donald Trump’s struggle to extricate himself from the unpopular Iran war has hit a new roadblock with the latest exchange of attacks between the two sides, leaving him with few good options and a faltering ceasefire. Trump declared that an interim agreement to end the conflict was "over" and ordered fresh strikes on Wednesday after Iran targeted U.S. military sites in Bahrain and Kuwait following the U.S. bombing of Iranian targets