Syrian President Bashar al-Assad pledged on Tuesday to do his part to guarantee the success of a shaky ceasefire that was largely holding into its fourth day.
World powers have thrown their weight behind the landmark truce as a way to bring an end to Syria's conflict, which began in 2011 with anti-government protests.
The United Nations said the next round of peace talks would resume in Geneva on March 9, announcing a two-day postponement "to allow adequate time to address logistical and practical matters".
Assad said the truce provided a "glimmer of hope" for Syria, where more than 270,000 people have been killed since the complex conflict erupted.
"We will do our part so that the whole thing works," Assad told German public broadcaster ARD, referring to the cessation of hostilities reached by the United States and Russia.
"We have refrained ourselves from retaliating in order to give (a) chance for the agreement to survive. That's what we can do, but at the end everything has a limit. It depends on the other side."
The president also offered a wide amnesty to opposition fighters if they agree to disarm.
"The most important thing for me, legally and constitutionally... (is) that you're not allowed, as a citizen, to hold machineguns and hurt people or properties," he said.
"This is the only thing that we ask. We don't ask for anything. As I said, we give them full amnesty."
