Can we find the extra $50-billion we promised NATO we'd spend on defence out of cuts in other spending? Yes we can.

Open this photo in gallery: Prime Minister Mark Carney and other leaders at the NATO summit said on Wednesday they would raise defence-related spending to the equivalent of 5 per cent of GDP by 2035.Pierre Crom/Getty Images Well that was easy. Canada has just officially signed on to NATO's latest target for military spending: 5 per cent of GDP, to be achieved by 2035. All it took was a stroke of the prime ministerial pen. If only most things in life were so simple. We only just announced, as you'll recall, that we'd meet NATO's former target of 2 per…