London Has Fallen is a sequel to 2013’s Olympus Has Fallen. The obvious implication is that the producers behind both films (Gerard Butler, Alan Siegel, Mark Gill) are launching a Fallen franchise in which the gang can start globe-hopping and systematically arrange for wacko terrorists to destroy a new major city every couple of years. (It’s an idea, at least.) I’m more of a White House Down kind of guy because that film, whether you want to accept it or not, was a genre satire and pretty much a broad disaster comedy (at which I had a good time, laughed, clapped) while Olympus tried to deliver a semi-sincere Die Hard thing…and failed.