The Canadian government said it is in conversation with the United States to join its proposed "Golden Dome" missile defense system, designed to deal with the "next generation" air threat.

Prime Minister Mark Carney's office said Canada and the United States had "active discussions" on security, including existing and new plans such as the Golden Dome.

U.S. President Donald Trump announced plans for a new missile defense system earlier Tuesday, announcing the initial $25 billion (£18.7 billion) to build it. He added that Canada expressed interest in joining.

Experts have questions about how the U.S. will provide a comprehensive system, and it is unclear how Canada will participate or pay for it.

Canada's entry into the openness of the proposed Golden Dome system after Trump threatened Canada's huge tariffs is in the context of ongoing trade and security negotiations between the two countries and said that as a U.S. state, it would be better.

This has brought a wave of national patriotism in Canada to a historic election victory for the Carney Liberal government.

"Canadians have given the Prime Minister a strong mission to have a comprehensive new security and economic relationship with the United States," said Audrey Champoux, a Carney spokesman.

“To this end, the Prime Minister and his minister are having extensive constructive discussions with their U.S. counterparts,” she said.

“These discussions naturally include strengthening NORAD and related initiatives such as the Golden Dome.”

But Ms Champoux added that it was too early to say what Canada might pay for the program or how the country works.

Trump said earlier on Tuesday that Canada expressed interest in being part of the Golden Dome.

"We will talk to them," the U.S. president said. "They also want to be protected, so we help Canada as usual."

Trump said the new Golden Dome Defense Missile Program will be operational at the end of his tenure and will be priced at $17.5 billion. He added that his government is looking for Canada to "pay their shares."

Canada and the United States are already partners at North American Aviation Defense Command (also known as NORAD) - a system responsible for aerospace and maritime surveillance, warning and defense of the region, which can detect and shoot down Cruise missiles.

Noard has been around since 1958, and in recent years, both countries have been discussed to modernize.

Trump said the proposed gold dome is intended to target increasingly complex aerial weapons and will include space-based sensors and interceptors.

He said the system would "even be able to intercept missiles launched from the other end of the world or from space."

Part of it is inspired by Israel's iron dome, which has been used to intercept rockets and missiles since 2011.

Experts doubt the United States will be able to establish the same comprehensive defense system, given its larger land quality.

One way the Golden Dome can be used is to use thousands of satellites to discover and track missiles, then take off in the missiles using shooters in orbit and take them out and remove them in the missiles.

He said the U.S. military will take the plan seriously, but it is unrealistic to think it will be completed during Trump's term and the huge cost will absorb a large part of the U.S. defense budget.

The Congressional Budget Office estimates that the final price tag could be $5.42 billion in 20 years alone on the space parts of the system.