ABSTRACT: While biological warfare has classically been considered a threat requiring the presence of a distinct biological agent, we argue that in light of the rise of state-sponsored online disinformation campaigns, we are approaching a fifth phase of biowarfare with a ‘‘cyber-bio’’ framing.

“We’re not just fighting an epidemic; we’re fighting an infodemic,” said World Health Organization (WHO) Director-General Tedros Adhanom Ghebreyesus at the Munich Security Conference on February 15, 2020.

Preface: In response to legislation passed in 1985, the Department of State on July 30, 1986, submitted to Congress a document titled Active Measures: A Report on the Substance and Process of Anti-U.S. Disinformation and Propaganda Campaigns. This report updates that document, focusing on events and changes which occurred between June 1986 and June 1987. Both reports were prepared by the Active Measures Working Group.

Russia has claimed without any evidence that biological weapons are being developed in laboratories in Ukraine with support from the United States. It says material is being destroyed to conceal the country's weapons programme, but the US says this is "total nonsense" and that Russia is inventing false narratives to justify its actions in Ukraine.

"Before Russia invaded Ukraine in February, its diplomatic missions began circulating some particularly fantastical lies. For example, the United States was using Ukrainian laboratories to develop biological weapons that would be spread by specially trained migratory birds and