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Letters: The secret U.S. plan to invade Canada

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Letters: The secret U.S. plan to invade Canada. (2026, October 4). National Post. https://nationalpost.com/opinion/letters-the-secret-u-s-plan-to-invade-canada

Dated when The Aporia collected the article, usually within hours of publication. Check the original for its exact date and byline.

National Post · collected 2026-10-04 · by Letters

Quick Summary

A letter writer argues that there is historical basis behind former Canadian Prime Minister Mark Carney's comments about preparing for a U.S. invasion of Canada, referencing the declassified War Plan Red from the late 1920s which included plans to invade and attack strategic locations in Canada. The plan was part of broader U.S. military contingency strategies during that era but is widely seen as merely theoretical.
Written by AI on 2026-10-04, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

In a surprising revelation, it was recently disclosed that there is historical evidence supporting Prime Minister Mark Carney's comment about preparing for the "extreme tail risk" of an American invasion of Canada. The U.S. military developed War Plan Red in the late 1920s as part of various contingency plans for potential conflicts with other nations, including Japan and Germany. Although generally seen as a theoretical exercise, War Plan Red included detailed strategies for invading Canada, targeting major cities such as Halifax, Niagara Falls, Montreal, Quebec City, Toronto, Winnipeg, Vancouver, and Victoria. In response, the Canadian government created its own defensive plan called Defence Scheme No. 1.

Written for “Us Invasion Plan Controversy” on 2026-11-03, grounded in this article and the 0 other(s) covering the same event.

Story

📰 Us Invasion Plan Controversy
Politics · 1 article(s) covering the same event.

Compared with similar articles

This article reads unscored and hedges 8% of its claims. Each row says how that neighbour differs.
BBC News
⚖️ Leans right Hedges 4 of 46 claims Outlet record 68/100
“Article A discusses Prime Minister Carney's acknowledgment of preparing for a low-probability US invasion scenario in 2026, while Article B references historical War Plan Red from the 1930s as context to support the current claim.”
National Post
⚖️ Leans right Hedges 3 of 29 claims Outlet record 60/100
“Article A discusses Prime Minister Carney's recent conciliatory remarks in an interview with no mention of invasion plans, while Article B focuses on a letter addressing past U.S. military contingency plans and the context behind Carney's comments about preparing for 'extreme tail risk.'”
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
64
sentences that state something as happening or true
Uncertain
8%
5 of 64 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
60/100
National Post's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Politics
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-10-04 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

National Post · 1242 article(s) · 2 correction(s) detected
Running correction rate · 2 correction(s)

Who wrote this

No reporter is named on this article, beyond the feed's “Letters”.

Topics

CBC Canada Jewish U.S. War Plan Red

Subjects

CBC ORG · 6× Canada GPE · 4× Jewish NORP · 3× Mark Carney PERSON · 3× U.S. GPE · 3× Canadian NORP · 2× Liberals NORP · 2× Neil Herland PERSON · 2× Toronto GPE · 2× the British Empire GPE · 2×

Narrative

‘Disgusted’ by CBC’s treatment of Jewish reporter Re: CBC journalist accosted outside Yom Kippur service and Americans are outraged: ‘Try this in Florida and you go to jail’ — National Post staff, Sept. 23; and Jewish CBC journalist faces discipline over comments about anti-Israel protest — Chris Knight, Sept. 25 I am profoundly disgusted with the CBC’s decision to remove veteran reporter Neil Herland from the air after he shared his personal experience of being harassed outside a Yom Kippur service.
framing: assertive · carried by 1 article(s) · first seen 2026-10-04
🔮 I know there were a lot of disbelieving eye-rolls when people read about Prime Minister Mark Carney’s comment that he had prepared over the past year for the “extreme tail risk” that our southern neighbour might invade Canada, but there’s actually some fact behind this fiction.
2026-10-04 · National Post
Letters: The secret U.S. plan to invade Canada · assertive framing

Claims (64 extracted, 5 hedged)

I know there were a lot of disbelieving eye-rolls when people read about Prime Minister Mark Carney’s comment that he had prepared over the past year for the “extreme tail risk” that our southern neighbour might invade Canada, but there’s actually some fact behind this fiction. uncertain
neighbour → know → fiction
Back in the late 1920s, the U.S. military developed War Plan Red (formalized in 1930 and declassified in 1974) as a contingency plan in case of conflict with the British Empire. asserted
military → develop → Empire
It was part of a series of colour-coded contingency war plans for around the world. asserted
It → cod → world
Most people agree it was nothing more than a planning exercise, but a key part of War Plan Red was the invasion of Canada. asserted
part → agree → Canada
It involved U.S. military operations in Halifax, which would be targeted by a poison gas attack to prevent the Royal Navy from using the port, as well as Niagara Falls (power plants), Montreal, Quebec City, Toronto, Winnipeg (minerals and rail), Vancouver, Victoria, and other locations. asserted
which → involve → port
For its part, the Canadian government drafted Defence Scheme No. 1, conceived by Lt.-Col. James “Buster” Sutherland Brown, which proposed pre-emptive strikes on a number of U.S. border cities to buy time until support from the British Empire arrived. asserted
support → draft → Empire
Several years ago, no one with an ounce of sanity would have predicted the current trade war we’re in with our American neighbours, but imagine what kind of stable ground we might be on if someone with forward thinking had asked … what if? uncertain
someone → predict → thinking
‘Disgusted’ by CBC’s treatment of Jewish reporter Re: CBC journalist accosted outside Yom Kippur service and Americans are outraged: ‘Try this in Florida and you go to jail’ — National Post staff, Sept. 23; and Jewish CBC journalist faces discipline over comments about anti-Israel protest — Chris Knight, Sept. 25 I am profoundly disgusted with the CBC’s decision to remove veteran reporter Neil Herland from the air after he shared his personal experience of being harassed outside a Yom Kippur service. asserted
he → disgust → service
Penalizing a seasoned professional for sharing his firsthand account of a volatile situation only confirms the CBC has lost its journalistic integrity and has created an extremely unfair double standard. asserted
CBC → penalize → standard
Our national broadcaster’s treatment of journalist Neil Herland, who was doing what good reporters do, even though it was on his own time as he was going to prayer on the Jewish community’s holiest day of the year, was deplorable. asserted
he → do → year
The fact that my tax dollars are used to support this kind of unjust bias is disgusting. asserted
dollars → use → bias
Mark Carney is enabling Jew hatred in the Liberals’ continued funding of the CBC. asserted
Carney → enable → CBC
Marjie Zacks, Markham The left’s disastrous machinations Uncompromising idealists always reveal their authoritarian impulses once in power. asserted
idealists → reveal → power
Luckily for us, the Liberals’ lust for power has brought them back to the pragmatic middle on economic policy but, the illiberal and divisive progressive left continues to control our cultural institutions. asserted
left → bring → institutions
The battle for power will continue to rage to the delight of China, Russia and Iran (and Qatar), who will exploit these tensions every way they can. asserted
they → continue → tensions
Thankfully, more Canadians are waking up to the disastrous machinations of the left and hopefully, Prime Minister Mark Carney’s necessary defence of liberal democracy and experienced sailing of the economic ship will result in the prosperity, safety and unity Canadians crave. asserted
Canadians → wake → prosperity
The Conservatives need to make sure this happens. asserted
this → need → ?
Mike Sternberg, Ottawa ‘Waiting out’ Trump is not the answer The argument that Canada can simply “wait out” Donald Trump’s trade war deserves more scrutiny. asserted
Canada → wait → scrutiny
Canada may have the fiscal capacity to absorb economic damage. uncertain
Canada → have → damage
That does not mean Canadian workers, businesses and consumers should be expected to absorb it indefinitely. asserted
workers → mean → it
The people advocating patience are not necessarily the people paying the price for it. asserted
people → advocate → it
Delayed investment, disrupted supply chains and weaker demand are not abstract statistics. asserted
investment → disrupt → ?
They affect business decisions, employment and household incomes today. asserted
They → affect → decisions
Telling Canadians to remain patient may sound principled from a distance, but economic policy should ultimately be judged by who bears its costs. uncertain
who → tell → costs
Some U.S. tariffs reflect objectives that extend beyond President Trump, including rebuilding American industrial capacity, securing supply chains and reducing strategic dependencies. asserted
that → reflect → dependencies
Those pressures are unlikely to disappear with a change of administration. asserted
pressures → disappear → administration
Canada should certainly reject a bad deal. asserted
Canada → reject → deal
But “hold firm and wait” is not an economic strategy. asserted
hold → hold → ?
The better response is to strengthen what Canada actually controls: eliminate interprovincial trade barriers, accelerate energy and infrastructure projects, reduce regulatory burdens, improve productivity and diversify export markets. asserted
Canada → strengthen → markets
A stronger Canadian economy would give Ottawa greater bargaining power without requiring Canadians to endure unnecessary economic damage. asserted
economy → give → damage
Economic patriotism should not be measured by how much pain Canadians are willing to tolerate. asserted
Canadians → measure → ?
It should be measured by how effectively policy-makers create the conditions for Canadians to prosper. asserted
Canadians → measure → conditions
Are provinces willing to lose constitutional powers to the EU? asserted
provinces → lose → EU
The EU has been confederated only 33 years. asserted
EU → confederate → ?
Within confederation, Canada’s provinces retain far broader constitutional responsibilities than do EU member states, despite federal efforts to usurp provincial roles. asserted
states → retain → roles
These include a notwithstanding clause, which EU member states do not enjoy. asserted
states → include → which
Are Canadian provinces and territories willing to see Ottawa put up for auction their long-defended constitutional roles? asserted
Ottawa → see → roles
What the EU and Canada do seem to have in common right now are supremely over-reaching leaders, who have both chosen not to consult in any way their respective provinces, territories and states. asserted
who → seem → provinces
If this were more than political grandstanding, they would have worked maturely through our respective long-serving confederal institutions, and tabled options before our respective parliaments. asserted
they → work → parliaments
That Olivia Chow did not participate in a recent mayoralty candidate debate about antisemitism and the safety of her city’s Jewish community came as no surprise to any of us who have paid attention to her record since taking over city hall in June 2023. asserted
who → participate → June
…and 24 more, not listed.
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