Ukraine's security agency said Sunday it tracked down and killed Russian agents suspected of shooting one of its senior officers to death in the Ukrainian capital.

President Donald Trump said on Tuesday that Ukraine should not target Moscow with strikes, after the Financial Times reported that Trump on 4 July had privately encouraged Ukraine to escalate attacks ...

Trump announced on Monday that Ukraine will receive Patriot missile systems via NATO as part of a new package of US weaponry, and threatened “secondary tariffs” on other countries that buy Russian oil...