Khuseyn Vakhaevich Gakayev (Russian: Хусейн Вахаевич Гакаев), also known as Emir Mansur (not to be confused with Amir Mansur, or Arbi Yovmurzaev, the Chechen nationalist commander killed in 2010)[3] and Emir Hussein,[4] was a mujahid Emir (commander) fighting in Chechnya. He was one of the most senior field commanders still operating in the North Caucasus prior to his death on 24 January 2013.[2]