French President Francois Hollande called for the immediate implementation of humanitarian measures in Syria in order to build the conditions of a “credible cease-fire” two weeks before a new round of peace talks expected to take place in Geneva.

Hollande said in a statement that humanitarian aid should reach besieged areas, especially the rebel-held town of Madaya.

The French president met Monday with Riad Hijab, coordinator of the opposition team that will negotiate with the Syrian government.

Syrian President Bashar Assad “can’t have a role” in Syria’s future, Hollande said.

“We want to negotiate … if the conditions are met”, Hijab said. “We cannot negotiate with (Assad’s) regime when foreign forces strike the Syrian people,” he said, denouncing Russian airstrikes.