Not on Our Watch is a nongovernmental, international relief and humanitarian aid organization based in the United States. The organization was established by Don Cheadle, George Clooney, Matt Damon, Brad Pitt, David Pressman, and Jerry Weintraub in 2008, to bring global attention to human rights violations in Darfur and beyond, while providing resources to assist in putting an end to mass atrocities around the world. The organization has its roots in the book, Not On Our Watch, written by Don Cheadle and human rights activist John Prendergast, who is also a board member and serves as the organization's Strategic Advisor.