Why would US invade Canada for wanting closer ties with EU? Like EU is damaging its population for US interests? Like you maybe misunderstood my point, but it is enemy entities that are not liked on the border of superpower, let Canada say that they want to join CSTO and see what happens
They got invaded the day after a president that turned the country away from the EU to Russia was ousted, not NATO to CSTO. They're getting shelled for exercising economic sovereignty, not military ones.
If Canada was to get wrecked for joining the Schengen Area (or somehow the EU or China's RCEP), which FWIW I don't see happening, it in no way would justify one or the other superpower pre-emptively crushing sovereign countries. Just like other cases of the US encroaching on foreign countries for dubious reasons don't excuse or justify Ukraine in any way.
