President Recep Tayyip Erdogan on Wednesday urged Turkish voters to back the ruling party in November snap elections, saying the polls would be a choice between "stability and instability".

The repeat elections come after the ruling Justice and Development Party (AKP) co-founded by Erdogan failed to win an overall majority in a June vote and talks to form a coalition government failed.

European ministers will gather in Paris for security talks at the weekend following last week's "targeted and premeditated" jihadist attack on a high-speed train that was foiled by passengers, it was announced Wednesday.

Prosecutors have charged 25-year-old Moroccan Ayoub El Khazzani over the attack, which saw him watch a jihadist video on his phone before entering a toilet in the train, remove his shirt, and step out armed with an assault rifle, 270 rounds of ammunition and a Luger pistol strapped to his chest.

Turkey will go to the polls on November 1 in snap elections after the failure of coalition talks, the top election body ruled Tuesday, as President Recep Tayyip Erdogan tasked Prime Minister Ahmet Davutoglu to form a caretaker government.

Erdogan on Monday called the early election which the presidency said "has become a necessity" after the inconclusive June 7 legislative vote where his ruling party lost its overall majority.

The United States expects to accept between 5,000 and 8,000 Syrian refugees in 2016, officials said Monday.

State Department spokesman John Kirby also said 15,000 Syrian refugees have been referred to the U.S. for resettlement by the U.N. refugee agency.

At least eight people were killed and two more missing on Monday in flooding in Turkey's northeastern Black Sea province of Artvin, officials said.

Artvin governor Kemal Cirit was quoted as saying by the DHA news agency that at least three of those deaths were caused by the collapse of a house in the town of Hopa.

Turkish President Recep Tayyip Erdogan was on Monday expected to call snap polls likely to be held on November 1 after efforts to form a coalition government failed.

Erdogan is due to meet with parliament speaker Ismet Yilmaz at 1415 GMT a day after the deadline for forming a new government expired.

Two Turkish troops died Monday and a policeman was killed in new attacks blamed on Kurdistan Workers Party (PKK) militants in the country's southeast, the army and officials said.

The two soldiers died in a roadside bombing by the PKK early Monday in the Semdinli region of the southeastern Hakkari province close to the borders with Iran and Iraq, the army said in a statement.

At least 2,000 more migrants flooded overnight into Serbia in a desperate journey to try and go on to Hungary, the door into the European Union, a U.N. official said Monday.

At least 7,000 people -- mostly refugees from the brutal war in Syria -- have been registered so far in the last days in overwhelmed Serbia as Europe's worst refugee crisis in half a century rapidly worsens.

Turkish courts on Sunday remanded in custody five mayors from the Kurdish-dominated southeast on charges of seeking to destroy national unity by allegedly supporting calls for regional self-rule, reports said.

The investigation comes as Turkey carries out its biggest operation in years against Kurdistan Workers Party (PKK) militants who have responded by tearing up a 2013 ceasefire and staging daily attacks against the security forces.

Turkish courts on Sunday remanded in custody five mayors from the Kurdish-dominated southeast on charges of seeking to destroy national unity by allegedly supporting calls for regional self-rule, reports said.

The investigation comes as Turkey carries out its biggest operation in years against Kurdistan Workers Party (PKK) militants who have responded by tearing up a 2013 ceasefire and staging daily attacks against the security forces.