Ukraine’s government wants to restore the country’s frontier to where it was before Russia launched its first invasion more than a decade ago. The U.S. defense secretary said that was “unrealistic.” ...

It’s become a buffer zone since Belarus’ ally, Russia, invaded neighboring Ukraine three years ago. Similar fortifications farther north line Poland’s frontier with the Russian region of ...

The Baltic states are set to sever ties with Russia's power grid that date back to the 1950s, and instead integrate further ...