Tensions are not abating as the U.S. and NATO continue efforts to avoid armed conflict with Russia. This week President Biden said a Russian invasion of Ukraine would "change the world." State Department spokesperson Ned Price tells NPR what leverage the U.S. has to prevent that from happening. Mary Louise Kelly reports from Kyiv, where some people are preparing for an invasion, even as the Ukraine government urges calm. Additional reporting in this episode from NPR's Michele Kelemen and Daniel Estrin. In participating regions, you'll also hear a local news segment that will help you make sense of what's going on in your community.Email us at considerthis@npr.org.