The turmoil hitting Saudi Arabia's neighbor Yemen will pose the first big test for King Salman, and provide a glimpse as to whether his approach to hotspots in a fragmenting region will differ from that of his late brother.
President Bashar al-Assad has said U.S.-led air strikes against Islamic State militants in Syria should be subject to an agreement with Damascus and Syrian troops should be involved on the ground.
Saudi Arabia's King Abdullah died early on Friday and his brother Salman became king, the royal court in the world's top oil exporter and birthplace of Islam said in a statement carried by state television.
An Israeli helicopter strike in Syria killed a commander from Lebanon's Hezbollah and the son of the group's late military leader Imad Moughniyah, Hezbollah said, in a major blow that could lead to reprisal attacks.
