RT [@JackDetsch](https://twitter.com/JackDetsch/status/1498434833596489729) NEW: The US military academy’s top expert on urban warfare has become an impromptu advisor for Ukrainians taking up arms as Russia brings the fight to Ukraine’s biggest cities.

Russia could “die a thousand cuts” from an insurgency, @SpencerGuard told me.
https://t.co/TXZfpfvq0w