ISIS is using cryptocurrency platforms to conceal donations and get around financial security measures, experts have revealed after a surge in advertising for donations.

Some nine years after Iran’s powerful Islamic Revolutionary Guards Corps (IRGC) deployed military advisers and fighters to Syria to prop up the regime of President Bashar al-Assad, Israeli and U.S. officials have said Tehran is reducing its presence in Syria.

Iran’s Supreme Leader Ali Khamenei says the United States will be “expelled from Iraq and Syria,” adding that “The U.S. government’s long-term performance has led to abhorrence by a major part of the world.”