Trump's call for NATO states to increase defense spending would also call for a substantial increase in America's military budget.

US President-elect Donald Trump said that NATO countries should be spending 5% of gross domestic product (GDP) on defence, up from the current 2% target. "They can all afford it, but they should be at 5% not 2%,

His comments echo previous demands made by incoming US President Donald Trump that Nato countries should spend 4% of their national income on defence - double the current target of 2%. A major Nato exercise will begin in Eastern Europe in mid-January,

NATO members should spend 5% of their GDP on defense up from the current 2% target, incoming US President Donald Trump has said.Addressing journalists at Mar-a-Lago, Trump said most NATO members are not paying their fair share.