A trip to Europe ... Russia, Moscow and St. Petersburg, at 10 million and 5 million people, respectively, are larger than most European cities. It's true: Europe has a low birth rate. This map ...

Ukraine's president has discussed the idea of possibly swapping territories with Russia in future peace negotiations with President Donald Trump.

The expansionism of the presidents of Russia and the United States sets a dangerous example for less powerful countries that have open territorial disputes with Ukraine ...