Turkey will strike Syrian regime forces "everywhere" if its soldiers come under renewed attack, President Recep Tayyip Erdogan warned Wednesday and  accused Damascus ally Russia of committing "massacres" in Idlib.

"I hereby declare that we will strike regime forces everywhere from now on regardless of the Sochi deal if any tiny bit of harm comes to our soldiers at observation posts or elsewhere," Erdogan told a meeting of his ruling party in parliament. 

Syrian regime forces Wednesday pushed on with their offensive in the country's northwest, securing areas along a key national highway they seized, as tensions spiralled with Turkey which supports rebel groups.

Russian President Vladimir Putin and Turkish leader Recep Tayyip Erdogan have discussed de-escalation of the Syrian crisis, the Kremlin said Wednesday, adding that Russian-Turkish agreements should be implemented in full.

The U.N. Security Council was asked Tuesday to vote on a resolution supporting a ceasefire in Libya, in what would be the first binding text adopted since fighting flared in April last year.

Controversial Iraqi cleric Moqtada Sadr announced on Tuesday he was dissolving the "blue caps", an organised unit of his supporters accused of deadly attacks on anti-government protests in recent days. 

Palestinian President Mahmoud Abbas on Tuesday urged the UN Security Council to reject President Donald Trump's Middle East plan, saying it would splinter Palestinian lands and never bring lasting peace.

Iraqi officials on Tuesday commemorated Abu Mahdi al-Muhandis, the senior commander killed in last month's U.S. drone strike on Baghdad that targeted powerful Iranian general Qasem Soleimani.

Tensions escalated Tuesday between Syria's regime and rebel-backer Turkey as a Syrian military helicopter was shot down and Ankara warned of a "heavy price" for any attacks on its forces.

The massive aid operation for war-torn Yemen is under severe threat in the face of mounting obstruction from Huthi rebels, officials told AFP Tuesday ahead of a crunch meeting expected to be held in Brussels.

Dozens of cars in an Israeli Arab village were vandalised overnight, police said Tuesday, with slogans sprayed on a mosque indicating the involvement of Jewish extremists.