The Syrian regime has written to the UN, warning that it believes the US may attempt to frame it by alleging that it has used chemical weapons on so called “rebels”, as well as innocent civilians.

“The U.S. administration has consistently worked over the past year to launch a campaign of allegations on the possibility that Syria could use chemical weapons during the current crisis,” a letter penned to U.N. Secretary-General Ban Ki-moon by the Syrian Foreign Ministry states.

The letter was one of a series sent to the UN head according to the state-run Syrian Arab News Agency.