BBC AMERICA: Many Gulf heads of state have said they will not attend the summit of US and allied Arab leaders at Camp David later this week.
Their substitution with more junior leaders is being seen as a rebuff to President Obama's negotiations with Iran over its nuclear ambitions.
King Salman of Saudi Arabia announced on Sunday that he would not attend.
The White House, which has not publicly commented, previewed the king's visit as recently as Friday.
The talks, which will now be largely attended by leaders at the ministerial level, were designed to reassure the Arab allies of US support on a number of issues including talks with Iran and instability in several Arab states. » | Monday, May 11, 2015