The National Post is a US billionaire owned right wing propaganda rag that most Canadians wouldn’t wipe their ass with. If they’re saying this it’s a warning that should be heeded.

https://nationalpost.com/news/canada/braid-invading-canada-would-spark-guerrilla-fight-lasting-decades-expert-says

We are a large, rugged country with huge areas to hide in full of large rugged people with guns.