Islam does not permit showing disrespect towards the beliefs of any religion, especially towards the Islamic schools of thought. Thus any action that would result in divisiveness among the Islamic ummah and bring loss, and the destruction of lives and property upon Muslims is forbidden (haram) and goes contrary to religious law1.
Suicide attacks upon Muslims and killing them in different countries pains the heart of the friend of the shari‘ah and that of every normal person. These types of actions are not in concordance with Islam as a religion of kindness and mercy; they only efface that image of Islam in the world.
May God preserve and protect the Muslims from the evil of the oppressors and corrupters.