The Saudi king's absence from a regional summit to be hosted by President Barack Obama shows how Gulf states, displeased by what they see as U.S. indifference to Iranian meddling in the Arab world, may hesitate to bless any nuclear deal with Tehran.
U.S. Secretary of State John Kerry hopes to explore Russia's willingness to curb its involvement in Ukraine and its support for Syria's president at talks on Tuesday with President Vladimir Putin.
An Iranian cargo ship will set sail for the rebel-held Yemeni port of Hodeida on Sunday evening, Iran's Tasnim news agency said, in a move likely to fan further tensions with Saudi-led forces blockading the country.
A man and woman in Mississippi were arrested and charged with murder on Sunday after two police officers were shot dead a day earlier while conducting a routine traffic stop in Hattiesburg, officials said.
