Tail riskM2

US refuses to rule out force against Canada

A tail risk. A low-probability risk tracked with warning indicators, not a forecast. A separate yes/no question: it is not part of any sum. All tail risks.

A senior US official (President, Vice-President, White House press secretary, a cabinet secretary, or the Chairman of the Joint Chiefs) publicly declines to rule out the use of military force against Canada, in answer to a question or unprompted, by 2027-12-31. Calling force unlikely without excluding it does not count; refusing to answer when asked directly about Canada, or calling force an option, does. Only statements made after September 28, 2026, when the question was registered, count.

Current odds: 13% (range 3%–27%), as of 6 October 2026. An estimate, not a measurement.

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How the odds have moved

Each point is one recorded estimate, in order; the shaded band is the stated range.

As of	Odds	Reason recorded
6 October 2026	13% 3%–27%	From our model: we looked at the nine countries with normal relations with the US that Washington has put under sustained pressure since late 2024 (tariffs, sanctions, territorial or security demands), and noted when a senior US official first kept military force on the table against each. Six had such a statement, mostly within about two months. Countries that go six months without one rarely get one later: Canada, South Africa, India and Colombia had one between them in about three and a half years (Colombia, January 2026). We then lowered that rate twice for Canada: to just over half (0.57), because the US has not tied Canada to violence (cartels, killings or terrorism), as it did for Mexico, Colombia and Nigeria, all three of which saw such a statement; and by half again, because when asked directly in January 2025, the president said 'economic force' for Canada. About 13% by the end of 2027, in a range of 3% to 27%. The weak points: the rate after six months rests on a single event, and the second adjustment is a judgment call; set at a quarter or left out, it would give 7% or 24%.
6 October 2026	13% 3%–27%	From our model: we looked at the nine countries with normal relations with the US that Washington has put under sustained pressure since late 2024 (tariffs, sanctions, territorial or security demands), and noted when a senior US official first kept military force on the table against each. Six had such a statement, mostly within about two months. Countries that go six months without one rarely get one later: Canada, South Africa, India and Colombia had one between them in about three and a half years (Colombia, January 2026). We then lowered that rate twice for Canada: to just over half (0.57), because the US has not tied Canada to violence (cartels, killings or terrorism), as it did for Mexico, Colombia and Nigeria, all three of which saw such a statement; and by half again, because when asked directly in January 2025, the president said 'economic force' for Canada. About 13% by the end of 2027, in a range of 3% to 27%. The weak points: the rate after six months rests on a single event, and the second adjustment is a judgment call; set at a quarter or left out, it would give 7% or 24%.
6 October 2026	13% 3%–27%	From our model: we looked at the nine countries with normal relations with the US that Washington has put under sustained pressure since late 2024 (tariffs, sanctions, territorial or security demands), and noted when a senior US official first kept military force on the table against each. Six had such a statement, mostly within about two months. Countries that go six months without one rarely get one later: Canada, South Africa, India and Colombia had one between them in about three and a half years (Colombia, January 2026). We then lowered that rate twice for Canada: to just over half (0.57), because the US has not tied Canada to violence (cartels, killings or terrorism), as it did for Mexico, Colombia and Nigeria, all three of which saw such a statement; and by half again, because when asked directly in January 2025, the president said 'economic force' for Canada. About 13% by the end of 2027, in a range of 3% to 27%. The weak points: the rate after six months rests on a single event, and the second adjustment is a judgment call; set at a quarter or left out, it would give 7% or 24%.
2 October 2026	13% 3%–27%	From our model: we looked at the nine countries with normal relations with the US that Washington has put under sustained pressure since late 2024 (tariffs, sanctions, territorial or security demands), and noted when a senior US official first kept military force on the table against each. Six had such a statement, mostly within about two months. Countries that go six months without one rarely get one later: Canada, South Africa, India and Colombia had one between them in about three and a half years (Colombia, January 2026). We then lowered that rate twice for Canada: to just over half (0.57), because the US has not tied Canada to violence (cartels, killings or terrorism), as it did for Mexico, Colombia and Nigeria, all three of which saw such a statement; and by half again, because when asked directly in January 2025, the president said 'economic force' for Canada. About 13% by the end of 2027, in a range of 3% to 27%. The weak points: the rate after six months rests on a single event, and the second adjustment is a judgment call; set at a quarter or left out, it would give 7% or 24%.

Other readings on this scale: M1. All of them on the odds page.