The outlawed Kurdistan Workers' Party (PKK) on Monday said one of its guerrillas carried out a deadly suicide bombing against troops in eastern Turkey as a reprisal for the alleged bombing of a civilian village.

Two soldiers were killed and 31 were wounded in the bombing early Sunday in the Dogubayazit district of Agri province, the army said.

President Recep Tayyip Erdogan on Monday vowed to do "whatever necessary" in Turkey's controversial fight against Kurdish militants, with no end in sight to a two-week cycle of violence.

Ankara is waging a two-pronged cross border "anti-terror" offensive against Islamic State (IS) militants in Syria and Kurdistan Workers Party (PKK) rebels in northern Iraq, after a wave of attacks in the country.

Russian President Vladimir Putin is having a change of heart on the Kremlin's wholehearted support for Syrian leader Bashar Assad and may "give up on him" in the future, Turkish President Recep Tayyip Erdogan was quoted as saying Monday.

When asked if Putin could be persuaded not to support Assad, Erdogan said he saw his counterpart as "more positive" during a face-to-face meeting in the Azerbaijani capital of Baku in June and in subsequent telephone talks. 

Ten civilians were killed this weekend in a Turkish air strike against Kurdistan Workers Party (PKK) targets in northern Iraq, a Turkish pro-Kurdish party said Sunday, but the army denied the bombing had taken place near a populated area.

Among the civilians killed were children and a pregnant woman, and 15 other people were wounded in the pre-dawn strike by Turkish war planes on the village of Zarkel in northern Iraq on Saturday, the pro-Kurdish Peoples' Democratic Party (HDP) said in a statement.

Two Turkish soldiers were killed and at least two dozen other troops were wounded early Sunday in a suicide attack blamed on Kurdish militants, as Ankara kept up its air campaign against the rebels' bases in northern Iraq.

The attack in the Dogubayazit district of the eastern Agri province is the first time Kurdistan Workers Party (PKK) militants have been accused of staging a suicide attack in the current crisis, amid an escalating cycle of violence that appears to have no end in sight.

Kurdish rebels of the PKK should move out of Iraqi Kurdistan to prevent Turkish air strikes against them from causing civilian casualties, the region's leadership said on Saturday.

"The PKK (Kurdistan Workers' Party) must keep the battlefield away from the Kurdistan region in order for civilians not to become victims of this war," the office of the region's president Massud Barzani said in a statement.

German Foreign Minister Frank-Walter Steinmeier on Friday urged Turkey not to abandon the Kurdish peace process despite an upsurge in tension and violence.

Ankara "should not tear down the bridges with the Kurds which have been painstakingly built -- by both sides -- over the past few years," Steinmeier told Bild daily.

President Recep Tayyip Erdogan on Friday fiercely denied suggestions Turkey was assisting Islamic State militants, accusing "dark powers" of spreading false propoganda about his country.

During a visit to Indonesia, the president said Turkey had suffered "significant losses" in its battle against terrorists but was determined to keep up the fight, pointing to military operations launched by Ankara in the last few days.  

Turkish President Recep Tayyip Erdogan accused Europe on Friday of not doing enough to help refugees fleeing conflict in Syria and Iraq, suggesting it was responsible for people "drowning in the sea".

Turkey, which has taken in some 1.8 million Syrian refugees since the conflict started in 2011, has repeatedly said that it has been left to shoulder a disproportionate burden as Western states stand by.

Two Turkish police were killed on Friday in a gun attack on police headquarters in the southern region of Adana blamed on Kurdish militants, the official Anatolia news agency reported.

The gunmen fired on police headquarters in the city of Pozanti, sparking clashes which left two police as well as two militants dead, Anatolia said, quoting top local officials.