At least 20 countries expelled 139 suspected Russian spies in solidarity with the United Kingdom.
At least 20 countries have kicked out more than 130 Russian diplomats, believed to be covert intelligence officers.
Four countries bordering Russia reportedly called in Moscow's top diplomats on their territory as the EU decided its response to spy poisoning scandal.
An ex-spy, his daughter and a police officer are seriously ill. So what exactly is Novichok?
The president also thanked his security services for keeping Russia's new generation of weapons secret.
A new poll shows an increase in popularity across the board for state security careers, but it may not all be down to the job itself.
Ukraine and Russia's relationship has reached its lowest point since the collapse of the Soviet Union.
During its long tenure, Cosmos 1346 reportedly tapped into transmissions from the Falklands War in the 1980s.
The Russian Ministry of Foreign Affairs promised to hand over evidence of the alleged attempts to U.S. Secretary of State Rex Tillerson.
Russia's foreign ministry and its embassy in the U.K. went after Langley after an ad for new Russian-language officers went online.
Dana Rohrabacher, who once lost a drunken arm-wrestling fight with Putin, said he did not need any reminder to be cautious.
An uncorroborated report circulated by U.S. intelligence alleges Russian security agents watched Trump engaging in "perverted sexual acts."
Jan and Victorya Neumann defected, provided information to the CIA and FBI—and were then booted from the government payroll.
Kiev's SBU claims a Ukrainian national was attempting to recruit a double agent in the army.
Another senior staff change at the Kremlin makes room for a younger successor.
Intelligence agencies specialize in the manipulation of information, and Russia's are good at it.
Alexander Fishenko was sentenced to ten years for working as a Russian spy.
Moscow's spy agencies have started a campaign of bomb attacks to create panic and instability across Ukraine.
In an indictment that reads like an episode of The Americans, the U.S. government accused Moscow of targeting young women for espionage.