Proliferation optimism or pessimism?  Van weighs in on the classic Sagan-Waltz debate.  Why liberals are of two minds about China.  And what's wrong with advocating for a military coup in the United States?  A lot!  Dan Nexon's Tweet: https://twitter.com/dhnexon/status/1293350893446926340Adam Mount's Tweet: https://twitter.com/ajmount/status/1293063724161474560?s=20Tom Le's Tweet: https://twitter.com/profTLe/status/1291893103985438720Hunter Marston's Tweet: https://twitter.com/hmarston4/status/1292229570360311808?s=19Jonathan Hunt's Tweet: https://twitter.com/JRHunTx/status/1292004341461680130Edward Fishman on liberal internationalism: http://bostonreview.net/war-security/edward-fishman-death-and-rebirth-american-internationalismContributors: Jake Dellow, Gaby Magnuson, Pete McKenzie, Ciara Mitchell