Short answers, pulled from the story.
The word disinformation entered the Soviet lexicon in 1923. Joseph Stalin reportedly coined the term to sound French and deceive other nations into believing the practice originated in France.
Yuri Modin headed the active measures department at the Andropov Institute at Yasenevo District in Moscow. He previously controlled the Cambridge Five spy ring before leading these operations.
Operation Storm-333 saw KGB Alpha Group kill Afghan President Hafizullah Amin in 1979 before the full-scale invasion began. This targeted killing demonstrated how political assassination could serve as a precursor to larger military campaigns.
GRU spending exceeded one billion dollars supporting peace movements opposing the Vietnam War according to Stanislav Lunev. These funds helped create hundreds of committees across America and Europe that spoke out against US interference in places like El Salvador.
The Internet Research Agency established itself in 2013 to spread disinformation through social media platforms. By 2018, organic content created by this agency reached at least 126 million US Facebook users.