UPDATE 1-Russia takes part in talks between Syria and Kurdish-led SDF

BEIRUT/QAMISHLI, Syria,Oct 13 (Reuters) - The Syrian government and the Kurdish-led Syrian Democratic Forces (SDF) have been holding negotiations with Russian participation, a Syrian Kurdish politician said on Sunday, expressing hope for a deal that would halt a Turkish attack.Ahmed Suleiman, a senior member of the Kurdish Democratic Progressive Party in Syria, said the talks were being held at Russia's Hmeimim airbase in Latakia, although a source close to the Syrian government said they were t