The president recently announced his intention to withdraw from the Open Skies Treaty and is considering restarting nuclear testing. Dana, Jamil, Jodi and Les discuss the state of arms control and how the U.S. should approach international agreements. Is it better for the United States to model behavior by staying in bad treaties or leave them? Can the U.S. prioritize non-proliferation and modernization of the nuclear triad? How should we deal with our allies who are stuck in the middle? All these questions and more answered in this week’s Fault Lines.