In an interview due to be broadcast later on Friday, Assad called Turkish Prime Minister Tayyip Erdogan "bigoted" and said Ankara was allowing terrorists to cross into Syria to attack the army and Syrian civilians.

"It is not possible to put terrorism in your pocket and use it as a card because it is like a scorpion which won't hesitate to sting you at the first opportunity," Assad said, according to a transcript.

"In the near future, these terrorists will have an impact on Turkey and Turkey will pay a heavy price for it."

Turkey, which shares a 900-km (560-mile) border with Syria and has NATO's second largest deployable armed forces, is one of Assad's fiercest critics and a staunch supporter of the opposition, although it denies arming the rebels.

It shelters about a quarter of the 2 million people who have fled Syria and has often seen the conflict spill across its frontier, responding in kind when mortars and shells fired from Syria have hit its soil.

It has also allowed rebel fighters to cross in and out of Syria but has grown alarmed, along with Western allies opposed to Assad, by divisions among their ranks and the deepening influence of radical Islamists in Syria.

In September 2013, the al-Qaeda affiliated Islamic State of Iraq and the Levant seized Azaz, about 5 km (3 miles) from the border with Turkey, and has repeatedly clashed with the local Northern Storm brigade since then.

"Right now, Syria is headed for a sectarian war," Erdogan said in an interview late on Thursday.

"This is the danger we are facing."

Turkey has bolstered its defences and sent additional troops to the border with Syria in recent weeks and its parliament voted on Thursday to extend by a year a mandate authorizing a military deployment to Syria if needed.

Undecided on elections

Assad accused Erdogan, whose AK Party has its roots in conservative Islamist politics, of a sectarian agenda.

"Before the crisis, Erdogan had never mentioned reforms or democracy, he was never interested in these issues. Erdogan only wanted the Muslim Brotherhood to return to Syria, that was his main and core aim," he said.

Erdogan's government strongly denies any such agenda.

His aides point to his cultivation of good relations with Assad for years before the conflict and say Turkey does not see Syria's Sunni Muslims and its Alawite sect, an offshoot of Shi'ism to which Assad belongs, as fixed blocs.

Assad said he had not yet decided whether to run in presidential elections in 2014 because the situation on the ground was changing rapidly, adding that he would only put himself forward if Syrians wanted him to. The picture will become clearer in the next 4-5 months, Assad said.

The United Nations estimates that more than 100,000 people have died since the uprising against Assad began in March 2011 and has been notified of at least 14 chemical attacks.

The UN Security Council adopted a resolution last week that demands the eradication of Syria's chemical weapons and endorses a plan for a political transition in Syria agreed on at an international conference in Geneva in 2012.

UN Secretary-General Ban Ki-moon said after the vote that major powers hoped to hold a second peace conference on Syria in mid-November in Geneva.

In his interview, Assad again denied his forces had used chemical weapons and blamed such attacks on the rebels. Asked whether he expected the Geneva process to accelerate if Syria handed over its chemical weapons, Assad said he saw no link.

"Practically these issues are not related. Geneva II is about Syria's own domestic political process and cutting neighbouring countries' weapons and financial support to terrorists," he said.


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