Good morning!

Here's your daily dose of five things to know: Istanbul's airport has reopened in the wake of a deadly attack yesterday but the death toll is expected to rise; the Three Amigos summit is set to kick off today; officials are investigating a home explosion in Mississauga, Ont., the Toronto Maple Leafs' former general manager has launched legal action against the CRA; and a Canadian singer has allowed a filmmaker a glimpse into his diagnosis of early onset Alzheimer's disease.

1. Istanbul attack: All immediate Air Canada flights to and from Istanbul have been cancelled after twin bombings killed dozens of people at Turkey’s Ataturk Airport, one of the world’s busiest international travel hubs.

2. Three Amigos: U.S. President Barack Obama is joining Prime Minister Justin Trudeau and Mexico’s President Enrique Pena Nieto in Ottawa today for the Three Amigos summit, but security preparations have been months in the making.

3. Mississauga explosion: One person was killed and 50 to 100 residents displaced after a home exploded in Mississauga on Tuesday. In all, 25 homes were affected by the explosion with six heavily damaged.

4. Legal action launched: Ex-Toronto Maple Leafs general manager Dave Nonis has launched legal action against the Canada Revenue Agency over taxation of the remaining years on his contract with the team.

5. Documentary follows Canadian singer: A documentary is set to be released chronicling Spirit of the West frontman John Mann's struggle with early onset Alzheimer's disease. Mann and his wife allowed filmmaker and close friend Pete McCormack to document their transition from learning about the diagnosis to treatment in the space of six months.