One news report: "The deals supporters say it will boost trade by billions through cuts in tariffs across a broad swath of sectors including agriculture, pharmaceuticals and the auto industry."

It's a free trade deal with a large market Canada has worked seven years to make. Billions or gazillions would depend on how long it remains, markets disappearing like Brexit at snap of finger these days.

As for next time world blows up, Iraq-ISIS and Vietnam still-open wounds are not of our making. Canada doesn't buy the declared US doctrine of invading and occupying any country it considers inimical to its national interests.