Every U.S. president releases a national security strategy document about a year into their term, but few have made as big a splash as Donald Trump's, earlier this month.

The document formally spells out much of what we've come to expect from Trump's approach to foreign policy in his second term: political relationships are transactional, and American interests take priority above all else. The document also takes particular aim at Europe, and pledges explicit support for right-wing movements abroad.

Bob Rae was, until recently, Canada's ambassador to the UN, following decades of political office including premier of Ontario. He reads between the document's lines and explains what it means for Canada — and asks how much of it is actually worth taking seriously.