"This is a message to you, oh Vladimir Putin, these are the jets that you have sent to Bashar, we will send them to you, God willing, remember that," said one fighter in Arabic, according to Russian-language captions provided in the video. "And we will liberate Chechnya and the entire Caucasus, God willing," said the militant. "The Islamic State is and will be and it is expanding God willing." "Your throne has already teetered, it is under threat and will fall when we come to you because Allah is truly on our side."