President Donald Trump has long bet that he can scare allies into submission. It's a gamble that is increasingly being tested ahead of the Group of Seven summit beginning Monday in Canada.

U.S. President Donald Trump sounded an optimistic tone as he met with Prime Minister Mark Carney Monday on the sidelines of the G7 summit in Kananaskis, Alta., to discuss tariffs and other trade irritants — saying he thinks the two leaders can hammer out a deal within weeks or sooner.

Six of the Group of Seven leaders have discussed Russia’s war in Ukraine and international cooperation on key, non-military issues, wrapping up a summit that was forced to try and demonstrate how the wealthy nations’ club still can shape world events despite the early departure of U.