Leaders of the opposition training camp were among those killed in an air strike in Jabal al Dweila, according to a Syrian opposition spokesperson.
Sunni majority Syria was carved out of Ottoman Turkey in 1945, but since 1970, the Assad clan from an Alawite minority has ruled over it.
Experts say Syria's economic woes could weaken Bashar al Assad's military stranglehold over the country.
More than 20 air strikes targeted two mountains and three villages in the Jabal al Zawiya region and two other villages in the countryside of the Hama province, a war monitor and a civil defence group said.
Ankara is calling on stakeholders to "invest" instead in the UN-backed Libyan government.
Turkey's President Recep Tayip Erdogan says the Turkish Armed Forces are pursuing and neutralising terrorists non-stop, adding that its operations across the border also continue without interruption.
The patrol along the M-4 highway included "land and air elements", the Turkish Defence Ministry tweeted.
Turkish President Erdogan said the Syrian regime was using the coronavirus outbreak as an opportunity to ramp up violence in Syria's Idlib region.
Thousands of people in Athens protested against the European Union’s refugee policy, marching in solidarity with migrants and refugees who have been blocked at the Greece border from entering the EU territories.
The fighting came to a halt soon after the two powers signed a ceasefire deal in Moscow, but what are its key takeaways?
Syrian regime forces were sent fleeing from Idlib's Saraqib after being driven out by moderate forces.
German Chancellor Merkel and French President Macron held a joint phone call with Russian President Putin and discussed recent developments in Idlib, a spokesman for the German government said in a statement.
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