Obama meets Saudi king as U.S. Iran policy strains alliance

By Roberta Rampton RIYADH (Reuters) - U.S. President Barack Obama met Saudi Arabia's King Salman on Wednesday to seek joint action on security threats including Iran and Islamic State, but his visit is overshadowed by Gulf Arab exasperation with his approach to the region. The American president has come to the world's top oil exporter for a fourth and likely last time, hoping to reassure Salman and other Gulf leaders, whom he will meet on Thursday, of Washington's commitment to their security.