Igor Kirillov, head of Russia's nuclear and chemical defense, helped spread false claims about Ukraine, the U.S. and COVID-19.

Igor Kirillov, who was named the head of Russia’s nuclear defense forces in April 2017, was under sanctions from several countries including the U.K. and Canada for his role in Ukraine.

Kirillov ran Russia’s nuclear, biological and chemical defense forces. Kyiv previously accused him of ordering the use of chemical weapons against Ukraine.

Ukrainian sources were quick to background journalists to say they were behind the killing of Russian General Igor Kirillov. Experts say it's likely not that simple.

Lieutenant General Igor Kirillov met his demise in Moscow on Dec. 17, reportedly killed by a bomb attached to a scooter planted by the Security Service of Ukraine (SBU). "Kirillov was a war criminal and a completely legitimate target,

A Russian general assassinated by Ukraine was buried with full military honours on Friday as Moscow launched an apparent revenge attack on what it said was a Ukrainian intelligence service command centre in Kyiv.

Igor Kirillov, a general in charge of Russia’s military’s nuclear and chemical weapons protection forces, was killed on Tuesday by a bomb in Moscow, the Russian authorities said.

Kyiv strikes Russian skyscrapers in major drone attack 1,000km from frontline - Putin says he is open to talks with Donald Trump, saying ‘we will have things to discuss’

Lieutenant General Igor Kirillov, a leading figure in Russia's military, was assassinated in Moscow by a Ukrainian strike, prompting Russia to retaliate with an attack on a Ukrainian command centre. Kirillov's funeral was marked by high honors and notable attendees,

Nikolai Yuryev, head of the military counterintelligence department of Russia's Federal Security Service has resigned.

Russian President Vladimir Putin spoke out this week about General Igor Kirillov's assassination and criticized law enforcement.