At least 239 are dead in fighting Monday across Syria , opposition activists say . President Obama issues a direct warning to Syrian President Bashar al - Assad . Syrian rebels are using chemical warfare weapons , says a government official . The Syrian Foreign Ministry denies plans to use such weapons .
At least 239 are dead in fighting Monday across Syria , opposition activists say . President Obama issues a direct warning to Syrian President Bashar al-Assad . Syrian forces are mixing chemical warfare agents , says a U.S. official . The Syrian Foreign Ministry denies plans to use such weapons .