Khuseyn Vakhaevich Gakayev (), also known as Emir Mansur (not to be confused with Amir Mansur, or Arbi Yovmurzaev, the Chechen nationalist commander killed in 2010) and Emir Hussein, 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. In July 2011, Caucasus Emirate leader Dokka Umarov named Gakayev his naib (deputy) in the eastern sector of Chechnya, thus resolving the nearly year-long dispute that saw a number of nationalist field commanders break away from Umarov, with Gakayev serving as Emir of Vilayat Nokhchicho. Gakayev was killed by Russian security forces along with his brother Muslim and nine other militants after they were surrounded in the mountains of Vedeno, Chechnya on 24 January 2013. The rebel website Kavkaz Center confirmed their deaths in a statement released on 25 January 2013. Biography Gakayev was born on 8 July 1970 in the village of Kalinovskaya, which is located in the Naur district of Chechnya bordering Mozdok, North Ossetia. He participated in the First Chechen War from 1994 to 1996 – including the early struggle against the pro-Moscow Chechen opposition- fighting in units commanded by the legendary Shamil Basayev. Following the Khasavyurt Accord that ended the first conflict, Gakayev served as deputy commander of the Jundullah Islamic Brigade within the structure of the Eastern Front of the Chechen Republic of Ichkeria's (ChRi) armed forces, and he was also named Emir of the local Elistanzhi Jamaat of the Vedeno sector. It was in the fall of 1999 that Gakayev launched a military campaign which continues to this day in the same capacity. On 20 August 2003, Gakayev killed Shaiman Madagov, Imam of the Vedeno district, for "cooperating with the Russian state." Gakayev was also reportedly a part of the 2004 Nazran raid commanded by Basayev, an assault which killed over sixty people and resulted in the capture of virtually the entire weapons cache of Ingushetia's police force. The operation is considered a milestone in Gakayev's career and helped propel him from the ranks of everyday militants into the upper tier of rebel leadership. It was at this point that Russian sources began to associate him with many similar operations in the region. From spring 2006 until May 2007 Gakayev was commander of the Shali sector of the Eastern Mountain Front (renamed the Southeastern