A Free Syrian Army fighter points his weapon as his fellow fighter watches in Aleppo's Al-Ezaa neighbourhoodBy using Warren Strobel and Stephen Kalin GENEVA/BEIRUT (Reuters) – U.S. Secretary of State John Kerry flew into Geneva on Thursday to listen to Russia's plans to disarm Syria of its chemical weapons and forestall U.S.-led militia strikes, an initiative that has transformed diplomacy in the two-and-a-half-yr-old civil warfare. Kerry would insist any deal should power Syria to take fast steps to show it’s thinking about abandoning its chemical arsenal, senior U.S. officials mentioned ahead of Kerry's talks with Russian Overseas Minister Sergei Lavrov. Among the first steps Washington needs, one U.S. …