The Stoxx Europe 600 fell 0.4%, as Greece appeared no closer to an agreement with its creditors on overhaul measures that would release the next tranche of aid.
Al-Assad on Tuesday accepted the terms of the peace plan brokered by Annan that included an end to all violence by the government and opposition, the delivery of timely humanitarian aid, the release of arbitrarily detained people, freedom of movement for journalists, respect for peaceful demonstrations and freedom of association.