President Donald Trump and some of his closest advisers were caught off guard by the scope of Iran’s military response to U.S. strikes, while key Gulf allies have privately expressed anger at the White House’s decision to escalate the conflict, according to a Wall Street Journal report. The publication reported Friday that “the president and some aides were surprised at the breadth and scope of Iran’s retaliation,” which included missile and drone launches targeting regional countries from Azerbaijan to Oman, according to people familiar with the matter.” Gulf allies have reacted sharply behind closed doors. “Allies in the Gulf are...