U.S. President Donald Trump's ambassador to Canada is warning of consequences to the continental defence pact if Canada does not move forward with the purchase of 88 F-35 fighter jets.

"NORAD would have to be altered," U.S. Ambassador to Canada Pete Hoekstra told CBC News in an exclusive interview at Luke Air Force Base in Arizona.

He says the United States would likely need to purchase more of the advanced fighter aircraft for its own air force, and would fly them more often into Canadian airspace to address threats approaching the U.S.

"If Canada is no longer going to provide that [capability], then we have to fill those gaps," said Hoekstra.

Diplomat says U.S. fighter jets would enter Canadian airspace more often to address threats

More effort from the Orange Asshole to bully smaller countries like ours. Hold the line. No @#$%ing F-35s ✊. Shrink our relationship and dependence on the US TODAY!

Denmark worries U.S. could ground F-35 fleet

At least one nation is regretting its purchase of F-35s. Denmark has been embroiled in a dispute with the Trump administration over the president’s [illegal, deranged] push to own Greenland. The small European country even deployed those jets to the Arctic island over the threats.

Rasmus Jarlov, head of the Danish parliament's defence committee, has described "second thoughts" over the order, but says the country has little choice now that it is their only operational fighter aircraft.

Jarlov has a message for Canada: "choose another fighter jet."

"They're in for repairs about half the time or even more," he said, "so the Americans have all the power of actually destroying our air force just by shutting down [parts] supplies."