After a U.S. airstrike kills Iranian Gen. Qassem Soleimani in Iraq, Secretary of State Mike Pompeo tells'Fox & amp; Friends' that President Trump's decision was necessary to deter further aggression. The U.N. special rapporteur on extrajudicial killing on Friday said the President Trump-approved drone strike against Qassem Soleimani, Iran's top general, violated international human rights law. In a lengthy Twitter thread, Agnès Callamard said that "outside the context of active hostilities, the use of drones or other means for targeted killing is almost never likely to be legal," adding that the U.S. would need to prove the person targeted constituted an imminent threat to others. She also took issue with the justification for using drones in another country on the basis of self-defense. "Under customary international law States can take military action if the threatened attack is imminent, no other means would deflect it, and the action is proportionate," she wrote.