The 51st anniversary of Turkey's 1974 invasion of Cyprus highlights the ongoing division between Greek and Turkish Cypriots.

In 2003, the U.S.-led war on Iraq deeply divided NATO, as France and Germany led opposition to the attack, while Britain and Spain joined the coalition. A short summit, decades of mutual security.

NATO Is an Alliance Divided. Western European leaders see less threat from China and Russia than U.S. and Eastern European ones do. By . Andrew A. Michta. Share. Resize. Listen (3 min) ...

NATO’s 70th anniversary celebrations have become the setting of a political drama in which allies display disagreement over the organization’s role. WSJ’s James Marson explains what these ...

BRUSSELS — NATO countries are divided over what kind of political reassurances they might give Ukraine at the next NATO summit meeting, in mid-July, with the United States, Germany and France ...

U.S. President Donald Trump and his NATO counterparts are meeting at what might be a historic summit. It could also drive a wedge among the 32 member countries. Just a week ago, things had seemed ...