Question: Mustafa Badreddine was a military leader of a militant group that is now headed by what man?
Context: Abubakar Shekau, also known by the alias "Darul Akeem wa Zamunda Tawheed", or "Darul Tawheed" ("the abode of monotheism") (Arabic: دار التوحيد‎ ‎ ), thought to be born between 1965 and 1975 is a Kanuri man known as the leader of Boko Haram, a Nigerian militant group that has declared loyalty to the Islamist militant group Islamic State of Iraq Syria (ISIS).  He served as deputy leader to the group's founder, Mohammed Yusuf, until Yusuf was executed in 2009.  Nigerian authorities believed that Shekau was killed in 2009 during clashes between security forces and Boko Haram until July 2010, when Shekau appeared in a video claiming leadership of the group.  He has subsequently been reported dead with regularity, and is thought to use body doubles.  In March 2015, Shekau pledged allegiance to ISIL leader Abu Bakr al-Baghdadi.  Shekau is a Salafi.  He has been described as possessing a photographic memory. Al-Nasr (النصر ; Arabic for "Victory") was a Hazara militant group, opposed to the leftist Afghan government during the 1980s After the Revolutionary Council of Islamic Unity of Afghanistan, Al-Nasr was the elite militant group.  The organisation included many young men educated in Kabul, including Shia clergymen, and received support from the Khomeini government.  It was a part of the Tehran Eight political constellation. Ahmed Hussein al-Shar’a (Arabic: أحمد حسين الشرع‎ ‎ ), known by the nom de guerre Abu Mohammad al-Julani (Arabic: أبو محمد الجولاني‎ ‎ ), is the military leader of the Syrian militant group Tahrir al-Sham; he was also the emir of its predecessor organisation al-Nusra Front, the Syrian branch of al-Qaeda.  The US State Department listed Al-Julani as a "Specially Designated Global Terrorist" in May 2013, and four years later announced a $10 Million reward for information leading to his capture. Mustafa Barzani (Kurdish: ‎ "Mistefa Barzanî") (March 14, 1903 – March 1, 1979) also known as Mullah Mustafa, was a Kurdish nationalist leader, and the most prominent political figure in modern Kurdish politics.  In 1946, he was chosen as the leader of the Kurdistan Democratic Party (KDP) to lead the Kurdish revolution against Iraqi regimes, although at times he also allied himself to the Iranian government against Iranian Kurdish separatist groups.  Barzani was the primary political and military leader of the Kurdish revolution until his death in March 1979.  He led campaigns of armed struggle against both the Iraqi and Iranian governments. Soldiers of Egypt (Ajnad Misr in Arabic) is an active Salafist Islamist militant group that has been operating near Cairo, Egypt.  The groups was founded by Humam Muhammed in 2013, after he split away from the Ansar Bait al-Maqdis militant group.  The group claims that its attacks are "retribution" for the August 2013 Rabaa Massacre; notably, the group targets only security forces.  It has warned civilians of the presence of bombs that it has placed.  The Cairo Court for Urgent Matters declared the group a terrorist group on 22 May 2014.  It has been a Proscribed Organisation in the United Kingdom under the Terrorism Act 2000 since November 2014.  The United States Department of State designated it a terrorist organization on 18 December 2014. At 3:25 AM on 3 March 2008, two BGM-109 Tomahawk cruise missiles launched by a United States Navy warship hit the village of Dobley in Somalia.  According to US military officials the target of the attack was an al-Qaeda leader.  Dobley district commissioner Ali Hussein Nuir stated that Sheikh Hassan Turki, a local militant cleric was meeting with leaders of a Mogadishu-based militant group nearby.  Varying reports of casualties surfaced with villagers reporting that between four and six people were dead.  It is unclear whether these casualties were targets or civilians.  Villagers also reported that an aircraft had attacked them, but US military officials denied these reports merely stating that an attack had indeed occurred and that they were looking into the results.  At least two previous attacks of a similar nature occurred in 2007 where American forces targeted suspected al-Qaeda operatives in Ras Kamboni as well as in Bargal. Ahmad Salama Mabruk (Arabic: الشيخ أحمد سلامة مبروك‎ ‎ ; December 8, 1956 – October 3, 2016), known as Abu Faraj al-Masri (Arabic: أبو الفرج المصري‎ ‎ ), was a senior leader in the Syrian militant group Jabhat Fateh al-Sham, and was previously a leader in Jabhat al-Nusra and the Egyptian Islamic Jihad militant groups.  He was present alongside Abu Muhammad al-Julani at the announcement of the creation of Jabhat Fateh al-Sham.  He was one of 14 people subjected to extraordinary rendition by the CIA prior to the 2001 declaration of a War on Terror. Hezbollah (pronounced ; Arabic: حزب الله‎ ‎ "Ḥizbu 'llāh ", literally "Party of Allah" or "Party of God")—also transliterated Hizbullah, Hizballah, etc.—is a Shi'a Islamist militant group and political party based in Lebanon.  Hezbollah's paramilitary wing is the Jihad Council, and its political wing is Loyalty to the Resistance Bloc party in the Lebanese parliament.  After the death of Abbas al-Musawi in 1992, the group has been headed by Hassan Nasrallah, its Secretary-General. The 2014 Enugu Government House Attack was carried out on March 8, 2014, when members of the militant group "Biafra Zionist Federation" took control of the state house for about 4 hours and erected the flag of Biafra at the entrance of the house.  The leader of the group Barrister Benjamin Onwuka gave Nigerians living in Biafran territory an ultimatum to vacate their land before March 31, 2014, or face the bloodbath that will come afterward.  It was initially reported that another pro-Biafran militant group MASSOB was responsible for the attack, but this information was later discarded after BZF claimed responsibility for the attack.  Benjamin Onwuka was arrested by the Nigeria Police Force after attempting to carryout a similar attack on Enugu State Broadcasting Service. Mustafa Badreddine (Arabic: مصطفى بدر الدين‎ ‎ ‎; 6 April 1961 – c. 13 May 2016), also known as Mustafa Badr Al Din, Mustafa Amine Badreddine, Mustafa Youssef Badreddine, Sami Issa, and Elias Fouad Saab, was a military leader of Hezbollah and both the cousin and brother-in-law of Imad Mughniyah.  He was nicknamed "Dhu al-Fiqar" referring to the legendary sword of Imam Ali.  Badreddine was killed by shelling at Damascus International Airport and Hezbollah announced the attack was launched by Takfiri groups.  His death is seen as one of the biggest blows in the Hezbollah leadership.
Answer: Hassan Nasrallah