US President-elect Donald Trump has called on Nato's European members to spend 5% of their national incomes on defence. That is more than double the military alliance's current target of 2%.

The United States of America is a North American nation that is the world’s most dominant economic and military power. Likewise, its cultural imprint spans the world, led in large part by its ...

North America is the third largest continent in the world. It is located in the Northern Hemisphere. The north of the continent is within the Arctic Circle and the Tropic of Cancer passes through ...