Turkey hits Kurdish rebels in Syria, Iraq

Turkish warplanes have carried out air strikes on Kurdish militant bases in northern Syria and northern Iraq, destroying 89 targets, Turkey's defence ministry says, in retaliation for a bomb attack in Istanbul that killed six people one week ago.

The strikes targeted bases of the outlawed Kurdistan Workers Party (PKK) and the Syrian Kurdish YPG militia, which Turkey says is a wing of the PKK, the ministry added in a statement.

Turkey has blamed Kurdish militants for the blast on Istanbul's Istiklal Avenue on November 13 that killed six people and injured more than 80.

No group has claimed responsibility for on the explosion on the busy pedestrian avenue, and the PKK and Kurdish-led Syrian Democratic Forces (SDF) have denied involvement.

"It is time to give account for Istiklal," Turkish presidential spokesman Ibrahim Kalin wrote on Twitter on Sunday.

The Turkish air strikes were carried out in Qandil, Asos and Hakurk in Iraq and Kobani, Tal Rifat, Cizire and Derik in Syria, the ministry said.

The 89 targets destroyed included shelters, tunnels and ammunition depots, it said, adding that "many terrorists were neutralised" including "so-called directors of the terrorist organisation".

A spokesman for the SDF said that the Turkish strikes had destroyed infrastructure including grain silos, a power station and a hospital.

Eleven civilians, an SDF fighter and two guards were killed, Farhad Shami, head of the SDF media centre on Twitter, said.

The SDF said in a statement they would retaliate for the strikes.

"These attacks by the Turkish occupied forces will not go without a response," it said.

Eight security personnel, including seven police, were wounded as a result of a rocket attack by the YPG from Syria's Tal Rifat on a police post near a border gate in Turkey's Kilis province, the Interior Ministry said.

Separately, a Syrian military source told state media SANA that a number of servicemen had been killed in "Turkish aggression on Syrian land" on Sunday morning, in the countryside near northern Aleppo and Hasaka.

Turkey's Defence Minister Hulusi Akar said in a statement on Sunday morning that all necessary measures were taken to avoid damage to innocent people and the surroundings, adding that "only and only terrorists and structures belonging to terrorists were targeted".

"The claw of our Turkish Armed Forces was once again on top of terrorists," he added, dubbing the operation "Claw Sword".

The defence ministry said it was the first time it had launched an air strike on Kobani.

Regarding the air strikes, Russian Deputy Foreign Minister Mikhail Bogdanov told TASS news agency that Russia favours "negotiated solutions".

Russia has supported Syrian President Bashar al-Assad in the country's 11-year war while Turkey has backed rebels fighting to topple him.

Turkey has conducted three incursions so far into northern Syria against the YPG militia.

President Tayyip Erdogan has previously said Turkey could conduct another operation against the YPG.

Turkey has also escalated drone strikes in Syria in recent months, killing a number of key SDF officials.

Turkey regularly carries out air strikes in northern Iraq and has sent commandos to support its offensives against the PKK.

The PKK has led an insurgency against the Turkish state since 1984.

It is considered a terrorist organisation by Turkey, the United States, the European Union and Australia.

The US has allied with the YPG in the fight against Islamic State in Syria, causing a rift with NATO ally Turkey.