Ukraine's main intelligence agency, the SBU, says one of its most senior officials was disinformation back to Russia.

Opinion: The U.S. Defense Department might benefit from leveraging commercial technology more aggressively, argue RAND ...

Turner (R-Ohio) as chair of the House Permanent Select Committee on Intelligence ... how Republicans will approach Russia’s invasion of Ukraine during Donald Trump’s second term in office ...

The integration of cutting-edge technology in military operations has substantially evolved in recent years. One of the most striking advancements ...

The Security Service of Ukraine detains a top intelligence official on suspicion of working for Russia, saying he sent information back to Moscow at least 14 times.

“From our intelligence we’ve got information that North Korea sent tactical personnel and officers to Ukraine,” Zelenskyy told reporters at NATO headquarters. “They are preparing on their ...

Ukrainian President Volodymyr Zelenskyy is appealing to U.S. President Donald Trump’s history as a dealmaker, offering flattery as he seeks his leadership in negotiations that could end the ...

President Zelenskyy has accused his Russian counterpart Vladimir Putin of building up Russian military strength to continue the war against Ukraine. “Intelligence reports confirm that Russia is ...

The Trump administration is signaling that European allies need to take the lead in securing Ukraine. How they respond has a ...

RFE/RL's Live Briefing gives you all of the latest developments on Russia's full-scale invasion of Ukraine, Western military aid to Kyiv, worldwide reaction, and the plight of civilians and refugees.

Deterring Russia from re-invading Ukraine, once this war ends, could require 150,000 troops and American help with air cover, intelligence and missile defense, experts say.

Ukraine's Zelenskiy says ending the war means security guarantees Says talks can take any format if guarantees in place Zelenskiy again rules out elections under martial law Feb 9 (Reuters) - U.S ...