Musa Abu Marzouq

One of the heads of Hamas' Political Bureau. He has been involved in the organization's political activities since the 1980s, including fundraising from abroad, especially from the United States, for Hamas. Abu Marzouk was arrested in the U.S. in 1995 but was released after two years. He played a central role in negotiations on reconciliation with the Palestinian Authority and is considered one of the organization's key thinkers. His fortune is estimated in the millions.