A Russian military chief has warned the US to "fulfil its obligations" amid claims that the Syria ceasefire agreement has been violated nearly 200 times.

The truce, which came into force on Monday, has been billed as the last chance to work towards peace in Syria.

However, Russian lieutenant-general Viktor Poznikhir claimed the ceasefire has been violated 199 times since it came into force.

Lt Gen Poznikhir said: "The United States and so-called moderate (rebel) groups under their control did not implement any of the obligations taken under the Geneva agreements.

"If the United States does not take steps needed to fulfil its obligations under the 9 September agreement, then all the responsibility for any collapse of the ceasefire in Syria would lie with the United States."


Is the Syria ceasefire under threat?

General Vladimir Savchenko added: "The situation in Syria is worsening."

Earlier, Russian President Vladimir Putin said he remained "positive" over the ceasefire, but claimed that it was being used by rebels to regroup.

He added that the US "has the desire to keep the capabilities to fight the lawful government of President Assad" and is on a "very dangerous path".

Mr Putin's claims came after Russia and the US failed to agree over disclosing details of the ceasefire to the UN Security Council.

The council had been due to discuss whether to endorse the truce.

Image: The remains of the Carlton Hotel in the government-held side of Aleppo

The ceasefire was extended for 48 hours on Thursday, giving humanitarian agencies more time to access war-torn cities across Syria.

After reports that the Syrian regime had blocked aid convoys, US Secretary of State John Kerry called on his Russian counterpart Sergei Lavrov to act.

A spokesman for Mr Kerry said he told Mr Lavrov the US "expects Russia to use its influence on the Assad regime to allow UN humanitarian convoys to reach the battleground northern city of Aleppo and other areas in need".

Mr Kerry added that the US would not set up a planned joint US-Russian military co-ordination cell in Syria until regime forces there allow aid into besieged cities, the spokesman said.