WORLD IN BRIEF: Canada wildfire triggers US health alerts, Iran threaten trade disruption, Uganda nears Ebola-free status and other stories

Recent international reports indicate that Canadian wildfires have triggered health alerts in the United States, while Iran has threatened trade disruptions. Concurrently, Uganda is nearing a declaration of Ebola-free status. These developments highlight significant environmental, economic, and public health updates occurring across various regions of the globe.