We must also cancel as many American weapons-system purchases as our military can reasonably handle, while looking for alternatives for all future purchases. Most definitely, cancel the F-35 for any non-American warplane.
Building nukes was called "Thinking the unthinkable". But the real "unthinkable", for Canadians, was the loss of American alliance. That "unthinkable" is really happening. We were so complacent about it, we weren't ready, despite all those warnings. Get over it. This is not "just Donald Trump". This Is America. This is who they are, now.
He made it clear, just last February, that "No, I would not protect you, in fact, I would encourage [Russia] to do whatever the hell they want. You got to pay." then he was re-elected with a popular vote victory. The popular vote for him was higher among Gen-X than Boomers. The Trump-trend is not going away with America's changing demographics.
Even if Trump fails badly, and his party changes, America will remain in this position, or be able to switch to it in a year flat. (Trump was nobody, indeed a joke, on January 20, 2016.)
All the other NATO countries are just a short drive away from France, or sail from the UK. They can be sure that UK and France will still risk that hellfire to protect NATO-Europe; any attack on European soil is headed for them, too.
As Gwynne Dyer stressed about Ukraine, three years back, promises are worthless. Nobody risks nuclear hellfire except for their own people, so they have to see an attack on you as upon them. America would still see that about Russian ships in the St. Lawrence, yes. But not in our Arctic Islands, should they turn out to be full of valuable minerals the Russians wanted. We'd be told to concede to them, as Ukraine just was. UK and France would look at their shoes.
So we need our own nukes, sorry. We just can't depend on America any more.
That's where "practicable" includes the new military budget, which just doubled. We need new military budget for the switchover, for the nukes, and for development of weapons systems of our own, domestically.
Above all, the budget changes because we need the respect. We absolutely cannot tolerate these insults and threats without a really strong reply, and bourbon won't cut it.
If we keep buying, after being told that NATO is a dead letter in their eyes, we will look pathetically weak, submissive as George McFly to Biff Tannen, pretending to laugh at Biff's "jokes", when, not just Biff, but everybody watching, knows it's not a joke, and George is Biff's whipping boy.
We can't look like that before the whole world. We must hit back with a lot more than 10% reductions in travel and some whiskey. George couldn't hit back at Biff by getting Biff's part-time hours at his job cut down. It has to be visible, and it has to hit their pride. They don't make movies about their whiskey, they make movies about their warplanes.
The perfect clap back would cancel the F-35, and a dozen other purchases in the same speech, while announcing dramatic increases in military spending, which will be directed to other weapons providers, and to "domestic weapons development, of the most high-tech and deadly kinds".
Both these positions invert my personal beliefs of 50 years, it's killing me. I just can't escape the logic.