Human T-lymphotropic virus. The human T-lymphotropic virus or human T-cell lymphotropic virus (HTLV) family of viruses are a group of human retroviruses that are known to cause a type of cancer called adult T-cell leukemia/lymphoma and a demyelinating disease called HTLV-I associated myelopathy/tropical spastic paraparesis (HAM/TSP).
The Geneva convention doesn't apply to ISIS anyways as they are considered unlawful combatants. We ran into these gray area issues in Iraq as many of the insurgents were not locals, non-uniformed and not state sponsored.
ISIS has support. It is one of many groups. ISIS is based upon a certain ideology, upon a certain interpretation of religion, and upon a certain fiqh [Islamic jurisprudence]. Unfortunately, what happened to the Yazidis and others in northern Iraq is to be found in the fiqh of Shiites and Sunnis alike.