Washington is home to countless private soirees and high powered dinner clubs, but there’s only one gathering devoted to nukes. They take place once every couple of months at a restaurant or townhome on Capitol Hill and are organized by former Democratic congressman John Tierney, who heads a group that advocates nuclear nonproliferation. Attendance is usually strong—at least a couple of dozen lawmakers show up—and they’re joined by experts like former Secretary of State John Kerry and former Energy Secretary Ernest Moniz. Sam Brodey writes in the Daily Beast that with global nuclear threats on the rise, and with Congress’ general knowledge of those threats on the decline since the end of the Cold War, those involved with the dinner say it’s more important than ever for lawmakers to have an informal venue where they can bolster their nuclear bona fides.