Syria”s president has reassured Russia that he is ready to support the implementation of a ceasefire due to begin on Saturday.
President Assad discussed the ceasefire in a call with Russian counterpart Vladimir Putin, the Kremlin said in a statement.
It said he had “confirmed the readiness of the Syrian government to facilitate the establishment of a ceasefire”.
The deal for a “cessation of hostilities” between rebel and Syrian government forces was brokered by the US and Russia.
It does not apply to so-called Islamic State, the al Nusra Front and other militants designated as terrorists by the UN Security Council.
The Kremlin said President Assad said considered the agreement an “important step in the direction of a political settlement”.
However, both sides have stressed the importance of continuing an “uncompromising fight” against terrorist groups.
On Monday, President Putin promised to do “whatever is necessary” to ensure Damascus respects the ceasefire as he sealed the deal with President Obama.
But analysts have warned the complicated dividing lines between Syrian opposition groups and jihadists mean it could be doomed to fail.
The opposition High Negotiations Committee (HNC), which groups political and armed opponents of President Assad, has criticised the truce for allowing continued attacks on terrorist groups.
They fear its “obscure” terms were heavily influenced by Russia, which has been accused of airstrikes on non-jihadist groups and civilians in Syria.
A spokesman said it is yet to decide whether it will commit to the deal, which starts at 10pm GMT on Friday.
They had previously said acceptance of the truce was dependent on the regime and its backers fulfilling previous demands, including an end to blockades, free access for humanitarian aid, a release of prisoners, and an end to attacks on civilians.
Turkey, a key backer of rebel groups, has also expressed scepticism over the deal.
Turkish President Recep Tayyip Erdogan said the exemption which applies to terrorist groups should also include Syrian Kurdish militia forces.
“If Daesh (IS) and al Nusra are kept outside the ceasefire, then the PYD-YPG must similarly be excluded from the ceasefire for it is a terrorist group just as they are,” Mr Erdogan said.