It was Al Qaeda that is reported to have given Sunni extremists in Iraq the green light to attack Shiite civilians and holy sites. A Qaeda recruiter I met in Yemen described ... not highlight his group's Shiite identity. Hezbollah has even established an effective alliance with Hamas, a Sunni and Muslim Brotherhood organization. read more
To the best of my knowledge, Hamas is a Sunni Muslim organization. But perhaps you inquired this query due to support of Iran. So, Iran, as a Shia country, endeavor to defend or helping oppressed countries (Islamic countries) whether they are Sunni or Shia. read more
Shi'ite Iran, from its inception in 1979, saw Sunni organizations, such as Hamas, as tools with which to undermine the Sunni rulers, who control most of the Arab world. A full scale Middle Eastern, Islamic type of war between the Sunnis and Shiites is raging. read more
Hamas (Arabic: حماس Ḥamās, an acronym of حركة المقاومة الاسلامية Ḥarakat al-Muqāwamah al-ʾIslāmiyyah Islamic Resistance Movement) is a Palestinian Sunni-Islamist fundamentalist organization. It has a social service wing, Dawah, and a military wing, the Izz ad-Din al-Qassam Brigades. read more