Sarah Stimson Karis is an experienced international business advisor, consultant and  business developer, with a particular focus on creating collaborations between people, corporations and nonprofit organizations. She is the co-founder of deux4 LLC and is a member of the Board of Directors of the Stimson Center, a nonpartisan, independent think tank, based in Washington, DC. “The Stimson Center ranks 10th among all US think tanks and is among the top 20 defense and national security think tanks globally.” The Stimson Center promotes international security, shared prosperity and justice through applied research, deep engagement and policy innovation. Sarah may be reached at sarah@deux4.com.