President Donald Trump has long bet that he can scare allies into submission — a gamble that is increasingly being tested ahead of the Group of Seven summit beginning Monday in Canada. He's threatened stiff tariffs in the belief that other nations would crumple.

Global trade will be a major focus at next week’s G7 summit as world leaders gather in Alberta, including U.S. President Donald Trump, who will be making his first appearance at a major international event since returning to the White House in January.

The Canadian prime minister said officials in Ottawa and Washington are in intense talks on a new economic-and-security pact, but there is no deal yet.