escaped the assault, their future remains uncertain. >> translator: god will, we will return to aleppo. the blood of the martyrs will not go to waste, the blood of the children will not go to waste. the war is not over. >> reporter: while the end of the battle for aleppo has renewed calls for peace talks, it does not mean the end of tci war. as the fight against isis also continues, president obama added tonight that the situation in syria remains one of the hardest issues he has had to deal with in his presidency. >> john, thank you. russia and syria are not the only countries challenging president obama in his final days in office. china has been brazenly stolen american technology from right under the navy's nose. good evening, lucas.