Story highlights She said much of her family was executed by ISIS

Nadia Murad called on the Muslim world to fight the terror group

Washington (CNN) A former ISIS sex slave urged Congress Tuesday to more aggressively fight the terror group and offered her condolences for the massacre in Orlando, saying she's not surprised by it.

Nadia Murad, a Yazidi who escaped captivity in 2014, told the Senate Homeland Security committee that "the USA must act. We must terminate Daesh (ISIS) and all such terror."

"Daesh will not give up their weapons unless we force them to give up their weapons," she testified, with the assistance of a translator. "The Yazidi people cannot wait."

Murad called on the U.S. and other countries "to establish a safe and protected zone for Iraqi and Syrian religious minorities," which President Barack Obama has repeatedly rejected.

She also expressed her condolences for the attack in Orlando that left 49 dead but said she was not surprised it happened.