Germany Arrests 2 Men Suspected of Spying for Russia
The two men, dual citizens of both countries, were accused of being part of a plot to undermine aid to Ukraine by trying to blow up military infrastructure.
The Spy War: How the C.I.A. Secretly Helps Ukraine Fight Putin
For more than a decade, the United States has nurtured a secret intelligence partnership with Ukraine that is now critical for both countries in countering Russia.