Answer : 3. "Yemen"
Explanation :

The Houthi movement, officially named Ansar Allah or “Supporters of God,” is a Shia Islamic political and military organization that originated in the Saada Governorate of Yemen in the 1990s. Belonging to a clan from Yemen's northwestern Saada province, the Houthis follow the Zaidi branch of Shia Islam. Their emergence is linked, to some extent, to the reaction against growing Saudi financial and religious influence. In November 2009, during the rebellion against Yemen's central government, the Houthis entered Saudi Arabia. Originally led by Yemeni politician and activist of the Zaydi sect Hussein Badr al-Din al-Houthi, the movement is rooted in Zaydi revivalism.