Posted by the US Embassy in Moscow on 3/7/24.
https://ru.usembassy.gov/security-alert-avoid-large-gatherings-over-the-next-48-hours/
𝐂𝐇 𝐈𝐍𝐓𝐈𝐙𝐀𝐑 𝐇𝐔𝐒𝐒𝐀𝐈𝐍 @Intizarahmd
US Embassy has already warned American citizens of a terrorist attack at the concert.
How did they know??