Jim Bronskill, The Canadian Press

Liberal Leader Mark Carney promised Monday to get the federal government back into the business of home building, while Pierre Poilievre's Conservatives pitched a national energy corridor to fast-track approval of key infrastructure.

The New Democrats rolled out their own national project — a promise to help retrofit 3.3 million homes and pay for it by cutting supports for big oil and gas companies. 

A federal judge has dismissed a legal challenge of Justin Trudeau's move to prorogue Parliament, concluding the prime minister did not exceed the bounds of his authority.

Two Nova Scotia men had asked the Federal Court to declare the current suspension of Parliament illegal because there must be a "reasonable justification" for hitting the pause button. 

David MacKinnon of Amherst, N.S., and Aris Lavranos of Halifax sought an order setting aside Trudeau's January decision to advise Gov. Gen. Mary Simon to exercise her power to prorogue Parliament until March 24. 

Police say they have made more than 100 arrests and laid more than 300 charges in a national child exploitation crackdown, with some help from device-sniffing dogs.

Representatives of the RCMP and other police forces provided an update Wednesday on a project aimed at protecting children from sexual abuse.

RCMP Insp. Matthieu Girard told a news conference the recent sweep, known as Project Steel, led to the identification of dozens of victims and 37 children being safeguarded from harm.

Canada's spy agency warns that colliding global developments make the Arctic an "attractive, strategic and vulnerable destination" for foreign adversaries seeking to establish a presence in Canada.

A newly released Canadian Security Intelligence Service assessment flags the environment, critical infrastructure, economic activity and geopolitics as converging factors making the region susceptible to threats from abroad. 

The Prime Minister's Office says Justin Trudeau spoke with U.S. President Donald Trump about the war in Ukraine on Saturday ahead of a virtual G7 meeting slated for Monday.

Earlier this week, Trudeau told reporters that Ukraine must have a seat at the table in any talks on ending hostilities ignited by Russia's full-scale invasion three years ago.

Russian and U.S. representatives met in Saudi Arabia this week, without Kyiv's participation, and agreed to work toward a resolution of the war.

An internal government report warned a year ago that allowing "the trend of negative rhetoric" about the security of the Canada-U.S. border could lead to a thickening of the 49th parallel, adversely affecting trade and travel.

The report, written by a diplomat at Canada's embassy in Washington, said that failing to refute U.S. claims about a "crisis at the northern border" would lead to the erosion of Canada's image as a secure neighbour.

A federal unit that tracks suspected foreign interference has uncovered a "co-ordinated and malicious" effort — possibly launched by China — against Liberal leadership candidate Chrystia Freeland.

Rapid Response Mechanism Canada, based at Global Affairs Canada, is monitoring cyberspace for signs of state-sponsored information manipulation on behalf of the Security and Intelligence Threats to Elections Task Force. 

The government recently announced the task force, which is usually active during election campaigns, would operate during the Liberal leadership contest.

Canada's financial intelligence agency suspects online gambling platforms are being used to launder proceeds from fentanyl dealing and production.

In an operational alert, the Financial Transactions and Reports Analysis Centre of Canada says there is reason to believe people are depositing and withdrawing funds at online casinos to disguise proceeds from the traffic in deadly fentanyl and other opioids as wagers and winnings.

The RCMP's police dog training centre has been plagued by staffing shortages, low morale and rundown facilities that pose health risks to officers and canines, an internal review says. 

The evaluation of RCMP police dog services reveals numerous challenges for the program that supplies and trains four-legged helpers to protect VIPs, support emergency teams, and sniff out suspects and illicit drugs.

Canada's elections chief wants a ban on the misrepresentation of candidates and other key players in the electoral process through manipulation of their voice or image without consent.

The proposed change to the Canada Elections Act is among several measures chief electoral officer Stéphane Perrault is putting forward to address the use of deepfakes and other artificially created content to fool voters.

In an interview, Perrault said he is "hoping to convince" MPs to expand an electoral reform bill, currently in a House of Commons committee, to include some new elements.