A statement said that remarks by Kerry "threaten to cause the failure of the Geneva conference, are a flagrant violation of Syrian affairs and an aggression against the Syrian people's right to decide their future."
Kerry, who has been pressing for a peace conference about Syria in Geneva, said in Cairo today that Washington and its allies may differ over "tactics" on the conflict, but they shared the goal of a handover of power.
"The success of (the proposed peace conference) Geneva II depends solely on the Syrians' willingness to reach an agreement amongst each other to put an end to violence and terrorism, and to reach a political solution," it added.
President Bashar al-Assad's regime has brushed aside calls for his removal from power, branding peaceful opponents and armed rebels alike as "terrorists".