
Three U.S. senators — two Democratic presidential candidates and one of the party’s premier nuclear doves — urged House and Senate lawmakers negotiating the final version of the 2020 National Defense Authorization Act to tightly limit future U.S. production of plutonium nuclear-weapon cores. That is according to a letter dated Sept. 13 and delivered to the leaders of the House and Senate Armed Services committees from Sens. Edward Markey (D-Mass.), Bernie Sanders (I-Vt.), and Elizabeth Warren (D-Mass.). “We call on…