Question: Who is the Secretary-General of the bloc of which Nawwaf Moussawi is a part?

Context paragraphs:
All India Forward Bloc: The All India Forward Bloc (AIFB) is a left-wing nationalist political party in India.  It emerged as a faction within the Indian National Congress in 1939, led by Subhas Chandra Bose.  The party re-established as an independent political party after the independence of India.  It has its main stronghold in West Bengal.  The party's current Secretary-General is Debabrata Biswas.  Veteran Indian politicians Sarat Chandra Bose (brother of Subhas Chandra Bose) and Chitta Basu had been the stalwarts of the party in independent India.

Islamic Dawa Party – Iraq Organisation: The Islamic Dawa Party – Iraq Organisation (Arabic: "Ḥizb al Daʿwa al-Islāmiyya - Tanzim al-Iraq") is a political party in Iraq which is a component of the United Iraqi Alliance.  It split from the Islamic Dawa Party during the regime of Saddam Hussein when most of the leaders of Dawa were in exile.  It was allocated 12 seats by the Alliance after the elections in December 2005.  It is led by Hashim Al-Mosawy, who is its Secretary-General.  The head of the parliamentary bloc of the party is Kasim Muhammad Taqi al-Sahlani.

Skaff Bloc: The Skaff Bloc or Popular Bloc, led by Elias Skaff, was a 5-members bloc (including 1 Armenian Revolutionary Federation member) in the Lebanese Parliament that aligns with the Free Patriotic Movement from 2005 to 2009.  It was part of the current Lebanese opposition Change and Reform bloc, headed by Michel Aoun.In 2009 the party lost all his deputy after the victory of the 14 March alliance in the district.

Hussein Moussawi: Hussein el Moussawi is a Shia Lebanese member of parliament representing the Baalbeck/Hermil district.  He is a part of Lebanon's Loyalty to the Resistance bloc in parliament.

Ahmad Alhendawi: Ahmad Alhendawi (أحمد الهنداوي) (born 20 May 1984) currently serves as the Secretary-General of the World Organizations of the Scout Movement, the youngest in the history of the organization.  Prior to this, he was the first-ever United Nations Secretary-General's Envoy on Youth, appointed by the Secretary-General of the United Nations on January 17, 2013 as the youngest senior official in the history of the United Nations.  He supported UN Secretary-General Ban Ki-moon in addressing his thematic priority of working with and for young people as part of his current Five-Year Action Agenda.

Tripoli Bloc: The Tripoli Bloc has been one of the political blocs present in the Lebanese Parliament.  In 1961, the bloc had four members in the parliament.  All members of the bloc are deputies from Tripoli (Lebanon).  At the elections in June 2005, the bloc was part of the March 14 Alliance and the Rafik Hariri Martyr List that won the elections.  It remained committed to the basic premises of the March 14 Alliance in 2008.

Nawwaf Moussawi: Nawwaf el Moussawi is a Shia Lebanese member of parliament representing the Sour district.  He is part of Hezbollah's bloc.

Soyuz (faction): Soyuz (Russian: Союз, translated as 'Union') was a faction in the Congress of People's Deputies of the USSR.  The faction was critical of Perestroika and liberal reforms; it was opposed to de-centralization of the Soviet Union.  The group was founded on 14 February 1990, and its leaders included Viktor Alksnis (from Latvian SSR), Yegor Ligachev, Nikolai Petrushenko, Yevgeny Kogan (Estonian SSR), and Anatoly Checkoyev (Georgian SSR, South Ossetian autonomous region).  The faction claimed to have 500 members in the USSR Supreme Soviet.  The group managed to oust Soviet foreign minister Eduard Shevardnadze for 'giving up' Eastern Europe, in February 1991, it asked for a 'state of emergency' to be introduced in the USSR.  The Soyuz faction did not formally support the August coup of 1991, an event that had devastating consequences for the faction.  Many of the group leaders joined Sergei Baburin's movement Russian All-People's Union and the related Rossiya faction in the RSFSR parliament (sometimes called the sister faction of the Soyuz group).  An organization with the same name continued to exist as a political movement in the post-Soviet Russia, featuring communist/Neo-Stalinist views.  That organisation took part in the 1995 legislative election within the bloc Power to the People, led by Baburin and Nikolai Ryzhkov.  In the 1999 legislative election, the Soyuz movement, then led by Georgy Tikhonov, took part within the Stalin Bloc — For the USSR coalition.

Social Democratic Institutional Bloc: The Social Democratic Institutional Bloc (Spanish: "Bloque Institucional Social Démocrata" , or "BIS" ) is a left-wing and social democratic political party of the Dominican Republic.  It first contested national elections in 1994 when it was part of a Dominican Revolutionary Party-led alliance that won the Congressional elections.  It was again part of the winning PRD bloc in the 1998 elections, before switching its allegiance to the Dominican Liberation Party for the 2002 elections.  In the 2006 elections it was part of the victorious Progressive Bloc.

Hezbollah: 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.

Supporting paragraphs: Nawwaf Moussawi Hezbollah
Answer: Hassan Nasrallah