BEIRUT/ANKARA, Dec 2 (Reuters) - Syria is resisting Russian efforts to broker a summit with Turkey's President Tayyip Erdogan, three sources said on Friday, after more than a decade of bitter enmity since the outbreak of Syria's civil war. Assad says it is Turkey which has backed terrorism by supporting an array of fighters including Islamist factions and launching repeated military incursions inside northern Syria. Ankara is readying another possible operation, after blaming Syrian Kurdish fighters for a bombing in Istanbul. However, three sources with knowledge of Syria's position on possible talks said Assad had rejected a proposal to meet Erdogan with Russia's President Vladimir Putin. "It would be the beginning of a major change in Syria and would have very positive effects on Turkey.

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