Russian aggression is the top challenge for liberal democracies right now, military experts warned.

Canada's close defence and intelligence ties with U.S. make inter-operabillity, or the ability for jets to work seamlessly across various systems, a key factor.

In written remarks to the U.S. Senate committee on armed services, U.S. Gen. Terrence O'Shaughnessy said Russia has been steadily expanding its military presence in the North by upgrading its long-range bombers and developing new warships capable of carrying cruise missiles.

The two TU-160 Blackjack bombers crossed the North Pole and approached Canada from western Russia, but remained in international airspace before departing, according to Norad.

Commodore Jamie Clarke, deputy director of strategy at the North American Aerospace Defence Command, revealed the system's shortcoming Wednesday as he pressed on the need to upgrade Norad to face a growing array of modern threats.

It takes a village of dozens of tech firms to deliver the immersive effect for global Santa trackers.

Where is Santa Claus right now? Track Santa live as he gives presents to kids around the world with the NORAD Santa tracker.

What NORAD's annual Santa videos are a chance to remember that it is Canada’s most important military alliance, Matthew Fisher says.

Gen. Terrence O'Shaughnessy says Russia's recent military actions are one example of the risks facing Canada and the U.S.

The North American Aerospace Defence Command (NORAD) says two F-22 and two CF-18 fighter jets identified two Russian Tu-160 Blackjack strategic bombers that were entering an area patrolled by the Royal Canadian Air Force on Saturday morning.