New intelligence has emerged warning Washington that its upcoming confrontation with the Islamic State may leave it blind to a more sinister and direct threat from a much lesser known terrorist group that has arisen from the ashes of the Syrian war.

Very little information is being released at the moment by anyone within American intelligence circles, but the group calling itself Khorasan is said by officials to have concrete plans for striking targets in the United States and Europe as a chosen modus operandi – more so than the Islamic State (IS), formerly known as ISIS.