President Vladimir Putin said on Thursday that Islamic State militants had seized nearly 700 hostages in part of Syria controlled by US-backed forces and issued an ultimatum promising to execute 10 people every day.
Speaking in the Black Sea resort city of Sochi, Putin said the hostages included several US and European nationals, adding that Islamic State group was expanding its control in territory controlled by US and US-backed forces.
Putin did not specify what the militants' demands were.
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