Suspension of all high-level diplomatic contact UK/Russia, UK law changed to make it easier to confiscate Russian assets, 23 diplomats expelled from UK, 60 from the US + consulate closure, 33 from wider EU, 27 from other allies (in total ~150 constituting “the largest collective expulsion of Russian intelligence officers in history”), Russian banks sanctioned under the US CBW act (although Trump didn’t implement them), and personal sanctions against assets of GRU leaders.

What would you have considered to be a significant and proportionate non-military response?