Syria’s second-largest city Aleppo has fallen from government control for the first time since the country’s conflict began more than a decade ago, a war monitor said Sunday, after a surprise advance by the opposition.An opposition alliance has pressed a lightning offensive against forces of the Iranian- and Russian-backed Syrian government since Wednesday, the same day a fragile ceasefire took effect in neighboring Lebanon between Israel and the Iran-backed Hezbollah group after two months of all-out war.The Syrian army - supported by Russian air power - had recaptured in 2016 opposition-held areas of Aleppo, a city dominated by its landmark citadel.For all the latest headlines follow our Google News channel online or via the app.Damascus also relied on Hezbollah fighters to regain swathes of Syria lost to the opposition early in the war which began in 2011 when the government crushed protests. But Hezbollah has taken heavy losses in its fight with Israel.The Hayat Tahrir al-Sham and