MOSCOW - Russian aircraft have hit positions of the al-Qaida-linked Nusra Front near the Syrian city of Aleppo, thwarting an attempted offensive, Russia's Defense Ministry said in a statement on Wednesday. It also said that up to 1,500 militants controlled by the Nusra Front (Jabhat al-Nusra in Arabic), have attacked Kurdish fighters in Aleppo, killing 18 civilians and 11 of the fighters.