Speaking at a NATO meeting in Belgium, the defense secretary said the U.S. would no longer tolerate an imbalanced ...

This sparsely populated area centres on the shortest path between Russia's closest ... town near the border, which was drawn ...

For more information about the history of World War I, visit The National WWI Museum and Memorial ... map and reshaped many borders in Europe. The collapse of the Russian Empire created Poland ...

FRONTLINE has covered the war’s evolution, from the first days of the invasion to the grim toll the fighting has taken on civilians.