Britain's top diplomat says Europe's security 'is on a knife edge' and President-elect Donald Trump is right to demand NATO members increase spending.

NATO won't heed Donald Trump’s proposal for a massive hike in defence spending but will likely agree to go beyond its current target, according to officials and analysts. The U.S. president-elect declared on Tuesday members of the military alliance should spend 5% of gross domestic product (GDP) on defence – a huge increase from the current 2% goal and a level that no NATO country,

NATO's current target for members' defense spending is 2 percent of their country's GDP. Trump has repeatedly called on the alliance to increase this amount.