“The United States announced Friday that it is pulling out of a landmark nuclear arms treaty with Russia, arguing that it should not be constrained by a deal Moscow is violating with ‘impunity’ by deploying banned missiles.” AP: US pulls out of Cold War-era nuclear treaty, blaming Russia.

+ “Lewis and other experts say these new weapons have the potential to be used in the sort of nuclear war America hasn’t prepared for in years. Rather than a global conflagration, this would be a tactical nuclear conflict, where weapons would be deployed on the battlefield.” NPR: The U.S. And Russia Are Stocking Up On Missiles And Nukes For A Different Kind Of War. (Relax, it’s just gonna be a little nuclear war.)

+ Boston Globe: Trump has pulled out of international agreements before. Here’s a list.