US scrambles to salvage Syrian opposition talks ahead of planned Kerry meeting with Assad foes

U.S. Secretary of State John Kerry boards his plane at Andrews Air Force Base, Md., en route to London in his inaugural official trip as Secretary on Sunday, Feb. 24, 2013. (AP Photo/Pool, Jacquelyn Martin) (The Associated Press)

U.S. Secretary of State John Kerry boards his plane at Andrews Air Force Base, Md., en route to London in his inaugural official trip as Secretary on Sunday, Feb. 24, 2013. (AP Photo/Pool, Jacquelyn Martin) (The Associated Press)

FILE - In this Feb. 14, 2013 file photo, Secretary of State John Kerry speaks at the State Department in Washington. Kerry will make his first overseas trip next week to Europe and the Middle East, but is skipping Israel because that country's government isn't fully formed after recent elections. (AP Photo/Jacquelyn Martin, File) (The Associated Press)

The U.S. is frantically trying to salvage a Syrian opposition conference set for this week in Rome that U.S. Secretary of State John Kerry plans to attend.

A senior Obama administration official says Kerry has sent his top Syrian envoy to Cairo in hopes of convincing opposition leaders that the conference will be critical to securing additional aid from the United States and Europe.

Some members of the sharply divided Syrian Opposition Council are threatening to boycott Wednesday's meeting.

The official says U.S. envoy Robert Ford will say the conference is a chance for foes of Syrian President Bashar Assad to make their case for new and enhanced aid — especially to Kerry. He's on his first overseas trip as secretary of state.

The official was not authorized to discuss sensitive diplomatic matters publicly and spoke on condition of anonymity.