Bashar al-Assad's Syrian government may be developing new types of chemical weapons, US says

Trump administration officials have claimed the Syrian government may be creating new kinds of chemical weapons, despite a 2013 agreement to destroy such a programme. The US and Russia agreed to destroy Syria's chemical weapons arsenal in 2013, with weapons due to have been removed or destroyed by 2014. Several UN Security Council resolutions and the Chemical Weapons Convention also ban the use of such weapons.