He only has to notify Congress within 48 hours, and if they don't approve it, those troops can stay deployed for up to 60 days. I'm just saying, he has already shown he's very interested in finding every loophole possible.
Metaphors are a thing. People can (mostly) tell the difference between a literal war and a metaphorical war.
I say '(mostly)' because while the 'war on Christmas' and WWII are clear cut cases, the war on drugs is an example that sometimes skirts closer to the border. Though it's still very much a metaphorical war.