As momentum builds around the globe for regulating tech titans like Facebook and Google, Trudeau made it clear Wednesday that he sees government intervention as a last resort.

Facebook, Google and Microsoft have signed onto a declaration promising a dozen initiatives to protect the integrity of the Canadian election this fall — including working to remove phoney social-media accounts and fake content.

Tech giants will be in the hot seat this week as politicians from Canada and 10 other countries gather to consider how best to protect citizens' privacy and their democracies in the age of big data.