US Secretary of State Hillary Clinton is meeting Nato leaders in Turkey to seek a solution to the Libya crisis.
The gathering, the fourth of its kind since March, will also discuss aid to the rebels.
The group of 15 includes UK Foreign Secretary William Hague, Italy’s Franco Frattini, and Alain Juppe of France.
Mr Juppe has this week been talking up prospects of a political solution based on contacts with Col Muammar Gaddafi’s regime.
France played a key role in launching Nato-led strikes in Libya, under a UN-mandated mission to protect civilians.
A senior US official travelling with Mrs Clinton was quoted by Reuters as saying: “Countries are starting to look past Gaddafi.
“He’s going to go, and the meeting can be a useful place to take stock of and prepare for that transition.”
Representatives of the Benghazi-based National Transitional Council will be at the meeting, but invitations to China and Russia were both declined.
Rebels are holding eastern Libya and pockets in the west. Col Gaddafi remains entrenched in the capital Tripoli.
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Libya solution sought at talks