Theory:Doctor Who television discontinuity and plot holes/The Zygon Invasion


 * The Doctor is the President of the World here, but nobody really cares or follows his commands.
 * This isn't an extinction-level event, plus I don't think the Doctor's presidency includes military authority.Or maybe he's been imposed in favor of someone who stays on Earth more often. President of the World Jack Harkness, anyone?
 * It is a potential global Invasion and UNIT as stated in this episode has command over the military so the President of the World should have as well.