Days before the leaders of Russia and the U.S. hold a summit meeting in Alaska, Moscow’s forces breached Ukrainian lines in a series of infiltrations in the ...

Exacerbating Polish resentment has been the peculiar intransigence of the Ukrainian authorities when it has come to ...

The package includes geographical maps intended to justify Russia's territorial claims and ongoing military aggression, ...

P olish authorities have arrested a Ukrainian teen accused of subversive activities on orders from a foreign intelligence ...

Drones in the hands of non-state actors pose the greatest danger on the battlefield but the domestic landscape is far from immune.

"What comes after that meeting is up to President Trump," White House Press Secretary Karoline Leavitt told Fox News. "He ...