After months of speculation about his future, former Bank of Canada governor Mark Carney launched his campaign to replace Justin Trudeau as Liberal leader on Thursday with a promise to build the fastest-growing economy in the G7 if he's elected.

Mark Carney, the former governor of Canada's central bank, on Thursday launched his bid to succeed Justin Trudeau as Liberal Party leader and prime minister, immediately becoming a frontrunner in the race.

The former central banker for the UK and Canada pitched himself as a someone who can help a country navigate economic challenges.