NATO's agreement to boost defense spending has solved the main trade issue between the European Union and the U.S., EU's Antonio Costa told CNBC.

U.S. President Donald Trump has been exercising pressure for NATO allies to increase their defense spending across both of his terms in office.

BRUSSELS, Belgium: After satisfying Donald Trump’s calls for Europe to ramp up defense spending in NATO, EU leaders in Brussels turned Thursday to the next big challenge ahead:…

NATO's agreement to boost defense spending has solved the main trade issue between the European Union and the U.S., EU's Antonio Costa told CNBC.