A total of 3,486 Nato troops died in the 20-year conflict, of which the majority, 2,461, were US service members.

Four hundred and fifty-seven British troops died, while another 2,000 military and civilian personnel were wounded in action.

Canada, long the US's closest ally and largest trading partner, suffered 165 deaths, including civilians. Canada's 12-year deployment was the country's longest combat mission, with more than 40,000 personnel, and the deadliest since the Korean war in the 1950s.

Other Nato allies, including Italy, Germany and France, also had soldiers who died.

Trump has singled out Denmark, which controls Greenland " a territory the US president has said Washington "must" take over" " as being "ungrateful" for US protection during the second world war. Denmark suffering 44 combat deaths iin Afghanistan, the most per capita outside the US.