The U.S. has issued a warning to Canada regarding potential repercussions if the Canadian government decides against purchasing 88 F-35 fighter jets. The Canadian military's review of the F-35 program is expected to be finalized by September 22, and Defense Minister David McGuinty has pledged to make the findings public by the end of summer.

Alex Tétreault, a spokesperson for the Department of National Defence, confirmed that the review will be completed by the end of the calendar summer, which runs until September 22. Following the review, the findings will be presented to Prime Minister Mark Carney for a final decision.

On August 7, reports indicated that the Canadian military is likely to recommend proceeding with the F-35 purchase. This recommendation aligns with the Canadian Forces' initial preference for the American-made fighter jet. The close relationship between Canadian military leadership and their U.S. counterparts has historically favored further integration of the two forces.

The review was initiated after U.S. President Donald Trump made threats against Canadian sovereignty. Tensions have escalated, with Trump reportedly seeking to impose economic measures against Canada. U.S. officials have cautioned that abandoning the F-35 deal could jeopardize the NORAD alliance, which relies on both countries operating the same type of aircraft. U.S. Ambassador to Canada Pete Hoekstra emphasized, "If Canadians are flying one airplane, we’re flying another airplane, it’s no longer interchangeable."

Hoekstra also expressed concerns that Canada might consider acquiring both the F-35 and another fighter jet, such as the Swedish Gripen. He advised against this, stating, "You can’t afford two fighters, two different fighter jet programs. Canada should just decide what they want."

Supporters of the Gripen argue that it is better suited for operations in Arctic conditions. However, proponents of the F-35 highlight its importance for seamless integration with U.S. forces. The F-35 program has faced scrutiny, with the U.S. Government Accountability Office reporting on September 3 that the Block 4 version of the aircraft is significantly over budget and behind schedule.

Despite the ongoing challenges, the F-35 remains a critical component for the Canadian air force, as it would enhance interoperability with U.S. military operations. Some retired military leaders, however, have raised concerns about the reliability of the U.S. as a partner, questioning the wisdom of proceeding with the F-35 purchase.