US Secretary of State, John Kerry has said that his meeting with Russian Foreign Minister Sergei Lavrov was constructive and focused on settlement in Syria and Ukraine.The talks were held on the sidelines of the Asia Pacific Economic Cooperation ,AEC, summit in Peru. <br/><br/>He said, both were discussed about importnat topics from Yemen to Libya,Syria, as well as Ukraine.Meanwhile, Russian Foreign Minister Sergei Lavrov has denied that its military was carrying out air-strikes in rebel-held Aleppo this week.<br/><br/> He said in Peru that Russian air force and the Syrian air-force only work in the provinces of Idlib and Homs to prevent the Islamic State militants who might be leaving Mosul from getting to Syria.