Trump to witness return of US soldiers killed in Iran war

WASHINGTON, July 22 (Reuters) - U.S. President Donald Trump on Wednesday will attend a ceremony for four U.S. service members killed in Iranian attacks in the Middle East, who will return to American soil in flag-draped caskets. The ceremony, known as a "dignified transfer" of the bodies, comes amid growing frustration with Trump's war against Iran. The war has cost U.S. taxpayers at least $37.5 billion so far, has led to the deaths of 18 U.S. service members and injured more than 450 troops.…