Lt.-Gen. Sergei Rudskoi of the Russian Military General Staff speaks to the media, as a video released by the Russian Defense Ministry shows a Russian warplane unloads its weapons over target on screen at a Russian Defense Ministry building in Moscow, Russia, Wednesday, Aug. 10, 2016. Rudskoi said that fighting in Aleppo will cease for three hours daily to allow humanitarian aid deliveries. (AP Photo/Ivan Sekretarev)
Lt.-Gen. Sergei Rudskoi of the Russian Military General Staff speaks to the media, as a video released by the Russian Defense Ministry shows a Russian warplane unloads its weapons over target on screen at a Russian Defense Ministry building in Moscow, Russia, Wednesday, Aug. 10, 2016. Rudskoi said that fighting in Aleppo will cease for three hours daily to allow humanitarian aid deliveries. (AP Photo/Ivan Sekretarev) Credit: Ivan Sekretarev

Syrian activists said airstrikes targeting the Islamic State group’s de facto capital of Raqqa on Thursday killed at least 20 civilians, as neighboring Turkey called for greater cooperation with Russia against the extremist group.

The offer by Turkish Foreign Minister Mevlut Cavusoglu followed a meeting between the Russian and Turkish leaders in which they agreed to mend ties.

Cavusoglu also announced that his country will resume its airstrikes against ISIS targets in Syria, months after they were suspended amid a major row with Moscow. He said in an interview with Turkey’s private NTV television that Ankara “will again, in an active manner, with its planes take part in operations” against ISIS targets.

Turkey had temporarily suspended its limited participation in the airstrikes campaign by the U.S.-led coalition, following soured relations with Moscow after Turkish air force jets downed a Russian warplane on the Syrian border in November. Russia had retaliated by deploying long-range air defense missile systems to its base in Syria, 30 miles south of the border with Turkey and imposing an array of economic sanctions.

“On the issue of Daesh, we have made a call to Russia. We said we have a common enemy which we can struggle against together,” Cavusoglu said, using an Arabic language acronym for ISIS.

The local activist group called Raqqa is Being Slaughtered Silently said the airstrikes on Raqqa killed at least 20 civilians and cut the city’s water supply. The Britain-based Syrian Observatory for Human Rights said 24 civilians were killed, along with six others whose affiliation or identities could not yet be confirmed.

Both groups said the strikes were launched by Russian jets, though it was not clear how they made that determination. The Russian military said six of its long-range bombers had flown from their base in Russia to strike ISIS facilities near Raqqa, but did not mention civilian casualties. It said the raid destroyed a large ammunition depot, a plant producing chemical weapons and a large ISIS training camp.