Syrian President Bashar al-Assad says that an internationally backed proposal to bring about a truce this week is unworkable.
"Now they say they want a ceasefire within a week, fine, but who is able to draw together all these conditions and requirements within a week? Nobody," al-Assad says in a speech to Syrian lawyers in Damascus.
The Syrian leader adds that a ceasefire could only be acceptable to allow armed groups to "return to political activity ... or at least lay down their arms. It cannot be a ceasefire without any purpose or timeframe."
Calls for a ceasefire have arisen due to his army's advances, al-Assad says: "When does the West speak about a ceasefire? I think the answer is clear, when the gunmen feel pain and when [their defeats] start."