Newsweek:
Russian authorities arrested 74-year-old scientist Viktor Kudryavtsev on Monday for allegedly leaking secret information about Russia’s hypersonic weapons technology development to operatives in a NATO country.
According to Latvia-based news site Meduza, Kudryavtsev has been charged with treason, and around 12 others are allegedly being investigated in the case. The high-profile arrest sparked curiosity about Russia’s hypersonic weapons and why they are so highly prized.
Russia released a video displaying the hypersonic weapons just days after Russian President Vladimir Putin met with President Donald Trump. Putin had first boasted about Russia’s hypersonic missile program during a speech in March.