Formed in 1982 in response to the Israeli invasion of Lebanon, this Lebanon-based radical Shia group takes its ideological inspiration from the Iranian revolution and the teachings of the late Ayatollah Khomeini. The Majlis al-Shura, or Consultative Council, is the group's highest governing body and is led by Secretary General Hasan Nasrallah. Hizballah is dedicated to liberating Jerusalem and eliminating Israel, and has formally advocated ultimate establishment of Islamic rule in Lebanon. Nonetheless, Hizballah has actively participated in Lebanon's political system since 1992. Hizballah is closely allied with, and often directed by, Iran but has the capability and willingness to act independently. Though Hizballah does not share the Syrian regime's secular orientation, the group has been a strong ally in helping Syria advance its political objectives in the region.

http://library.nps.navy.mil/home/tgp/hizbalah.htm

Hezbollah

The Hezbollah meaning Party of God is a Shi'a Islamic organization and political party in Lebanon, comprising a military and a civilian arm, whose primary stated goal is to defend Southern Lebanon against present or future Israeli occupation. The current Secretary-General of Hezbollah is Sheikh Sayyed Hassan Nasrallah, who has held the office since 1992.

en.wikipedia.org