Saudi Arabia’s King Salman invited Gulf and Arab leaders to convene emergency summits to discuss the implications of this week’s attacks against the kingdom and neighboring United Arab Emirates, the foreign ministry said on Saturday.

A new anti-corruption body, formed by King Salman and headed by his son, Crown Prince Mohammed bin Salman, ordered the arrests, in a move reportedly designed to consolidate the crown prince's power.

Saudi King Salman on Tuesday ordered that women be allowed to drive cars, state media said, ending the conservative Islamic kingdom's status as the only country where that is forbidden.The royal decree ordered the formation of a ministerial body to give advice within 30...