Ukrainian troops are making small gains in Russia's Belgorod region, while Donald Trump has taken a swipe at Vladimir Putin.

Learn more about Russia’s illegal annexation of Crimea from the infographic below and explore the Kennan Institute’s ...

Ukrainian forces have responded to Russian efforts to expel them from one part of Russian territory by launching a large ...

Ukrainian troops have been progressing in the Belgorod region with the aim of diverting Moscow's troops from Kursk, it has ...