Opinion: We need to prepare for the possibility that the U.S. uses military coercion against Canada
(www.theglobeandmail.com)
Pre-preparing... don't buy US weapons with kill switches (F35). Stop the idiocy of Canada's military strategy/needs as continuing to act as force amplification for US evil/ambitions.
By far the most important diplomatic/military posture change must be re-evaluating Russophobia. Russia's narratives are far closer to reality than our propaganda, and our propaganda only exists to defraud us, not convince Russians that our values "are love towards them". More important that the demonic morality of agreeing with every US warmongering propaganda in history, pretending that anti-Russia/China propaganda matters more than our defense divides us with the world. It's that division that makes it easy for US to "settle for Americas" and give up the rest.
Preparing, together with Europe, means unity with Russia and China. Simply dropping the antagonism towards them goes a long way. It is a complete joke to try to bog Russia down in Ukraine, because, as always, they need to do the heavy lifting in protecting the world from the US.