The two most senior members of President Donald Trump’s Cabinet, Secretary of State Marco Rubio and Treasury Secretary Scott Bessent, flew out of last month’s NATO summit in Turkey on what was effectively a decoy plane following an Iranian threat, while Trump was secretly moved to a smaller military jet, a senior U.S. official said Wednesday. The official, who was briefed on the situation and spoke on condition of anonymity to discuss sensitive details of presidential travel, said Rubio was aware of the switch and details of the threat behind it but could or would not say why he had...