On Sunday morning, President Donald Trump tweeted that he was instituting a cyber-security commission with Russia, an idea the world greeted with the unmitigated disdain and horror that it so richly deserved.

Then on Sunday night, Trump abruptly announced that no, the cyber security commission isn't actually happening. "It can't happen," he tweeted. "It can't."

This left observers perhaps even more gobsmacked than the original proposal, which, mere hours ago, most people would not have thought possible.