Turkey and the EU have welcomed a nationwide truce for Syria brokered by the US and Russia but have warned that further action is needed.
Turkey said aid must be delivered from the very start while EU foreign policy chief Federica Mogherini looked towards a “political transition”.
The deal provides for a 10-day truce from Monday followed by co-ordinated air strikes against jihadist militants.
Fighting raged on Saturday, with at least 20 deaths from one air strike.
A spokeswoman for Syria’s opposition said the plan provided some hope but more details were needed about how it would be enforced.
In the Syrian capital Damascus, the government endorsed the deal, the state news agency Sana reported.
There has been no official reaction from Iran which, like Russia, is allied to Syrian President Bashar al-Assad.
The conflict in Syria, which began with an uprising against Mr Assad, has raged for five years and claimed the lives of more than a quarter of a million people.
Millions have fled abroad, many of them seeking asylum in the EU, but nearly 18 million people remain in Syria, which has been carved up by fighting between government and rebel forces.
An air strike on a busy market in rebel-held Idlib, in the north-west, killed 20 people and injured as many as 90 on Saturday, media and opposition activists said.
In other fighting:
- Rocket attacks on government-held areas of the eastern city of Deir al-Zour by so-called Islamic State (IS) killed at least seven people, Syrian state media say
- Israeli aircraft struck targets inside Syria after a projectile hit the Israeli-controlled part of the Golan Heights
- Reports spoke of air strikes by Syrian or Russian jets on the towns of Anadan and Hreitan near Aleppo
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Source: BBC