US Defense Secretary tries to soothe Saudis rattled by unrest

The Saudi king, looking thin after months of medical treatment in the United States and elsewhere, welcomed Gates for what the Pentagon chief later said was a cordial and warm visit.

The hospitality masked deep unease among Saudi Arabia's aged leadership about what the political upheaval in the Middle East means for its hold on power, its role as the chief counterweight to a rising Iran, and its changed relationship with the United States.

In a sign of the depth of the Obama administration's concern about the political earthquake that has shaken the region, including the island of Bahrain off Saudi Arabia's Persian Gulf coast, this was Gates' third trip to the area in the past month. He has echoed Secretary of State Hillary Rodham Clinton's cautioning of authoritarian Arab governments on the risks of moving too slowly in response to peaceful protests for political freedom.

Saudi Arabia views the threat of a nuclear strike from Iran as a far larger issue than the drive for political freedoms in Egypt and elsewhere.