La guerre de Trump contre le Canada deviendra-t-elle mondiale ?

WASHINGTON, DC, In early December 2025, southern Africa faced unprecedented devastation as months of relentless rainfall submerged roads, bridges, clinics, and schools across Mozambique’s Gaza province. Over 700,000 people were affected, with more than 200,000 displaced. At least 300 fatalities were confirmed, and waterborne diseases began to spread in the aftermath. World Weather Attribution later concluded that climate change had intensified the rainfall by approximately 40 percent. This climate-induced crisis followed a pattern familiar to many regions: the global donor community blamed climate change, framing it as an abstract challenge rather than assigning responsibility. Victims were often described as vulnerable populations, while specific actors remained unnamed. However, this approach appears to be changing. The shift became evident in the United States, where dense smoke from Canadian wildfires darkened skies over New Jersey in late November 2025. The haze led to widespread disruption, including concerns over the safety of major sporting events. Instead of calling for collaboration or offering assistance, President Donald Trump accused Canada of “unnecessarily invading” the U.S. with pollution. He claimed that the Canadian government was neglectful in managing forests and demanded higher tariffs as a form of retribution. This marked a pivotal moment in the geopolitics of climate change. For the first time, a powerful nation has sought to impose unilateral financial penalties for transboundary environmental harm caused by another state. Previously, issues related to climate change were primarily addressed through development aid, insurance mechanisms, or emissions accounting. Now, these matters are being reframed as security and trade disputes involving two G7 nations. The implications extend beyond the immediate U.S.-Canada relationship. The situation reflects a growing trend where climate impacts are increasingly viewed through the lens of national sovereignty and economic leverage. Canadian Prime Minister Justin Trudeau, who once served under former Governor General David Johnston, now finds himself navigating a complex political landscape shaped by both domestic pressures and international tensions. Trudeau's predecessor, Mark Carney, held a distinguished career as a central banker, advocating for the integration of climate risks into financial planning. His warnings about the “tragedy of the horizon” influenced global discussions on climate finance. Yet, as a leader, Carney faces mounting demands from within his own country for increased fossil fuel production and infrastructure expansion. These pressures align with the policies of the current U.S. administration, which has used tariffs as a tool to influence energy policy and resource extraction. The unfolding conflict underscores a troubling reality: scientific consensus alone cannot resolve disputes over climate-related damages. Instead, such conflicts are likely to be resolved through political and economic coercion. The U.S. is leveraging its position to extract compensation from Canada, despite the shared nature of the problem. This dynamic echoes past scenarios where developed nations have imposed conditions on developing countries, often at the expense of local growth and stability. Looking ahead, the trajectory suggests that similar disputes may arise in other regions. Climate-driven phenomena such as smoke, flooding, and population displacement know no borders. Countries sharing vital resources, such as the Himalayan rivers among India, Pakistan, and China, or the Mekong River basin, already experience territorial disputes over water rights. Meanwhile, environmental factors like Saharan dust entering Senegal from Mauritania highlight the interconnectedness of ecological challenges. These developments signal a new phase in international relations, where climate change is no longer merely an environmental concern but a geopolitical battleground. The U.S.-Canada dispute serves as a warning of what might come next, as the world grapples with the increasing complexity of climate-related conflicts.