"The President and the King shared their perspectives on the situation in Syria and expressed their strong concerns about the impact of the conflict on the region," a White House statement said yesterday.
"The President emphasized the United States' continued commitment to provide support to the Syrian Opposition Coalition and the Supreme Military Council to strengthen the opposition.
"The President and King also exchanged views on recent developments in Egypt. They agreed that the United States and Saudi Arabia have a shared interest in supporting Egypt's stability.
The US administration has refused to divulge exactly what kind of stepped up military aid it is providing to Syrian opposition forces battling President Bashar al-Assad.
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King Abdullah, meanwhile, was the first foreign head of state to congratulate Egypt's interim president Adly Mansour, hours after he was named to replace Morsi.
And on Tuesday, the kingdom pledged USD 5 billion in assistance to Egypt. The United Arab Emirates, which has cracked down on the Muslim Brotherhood in the past few months, offered Egypt an aid package of USD 3 billion.