In the Name of Allah, the Most Gracious, the Most Merciful
Quran 22:39 Permission to fight (against disbelievers) is given to those (believers) who are fought against, because they have been wronged. And surely, Allah is able to give them victory.
Quran 4:76 Those who believe, fight in the Cause of Allah, and those who disbelieve, fight in the cause of Taghut (anything worshipped besides Allah, like Satan). So you fight against the friends of Satan. Ever feeble indeed is the plot of Satan.
Some American writers have published articles titled On what basis are we fighting?. These articles have generated a number of responses, some of which adhered to the truth, and were based on Islamic Law, while others did not. Here, we wanted to outline the truth - as an explanation and a warning - hoping for Allah's reward, seeking success and support from Him.
While seeking Allah's assistance, we form our reply, based on two questions, directed to the Americans: