“US Embassy has already warned American citizens of a terrorist attack at the concert.
How did they know??”
Gee, maybe because they heard the reports of shots fired on police scanners, radio/TV, or from Russian government “sources” happening at that location and told citizens to avoid the area. 🤷♂️
Yes they did, on March 8th, and they did not mention if they warned the Russian authorities.
NooseWeak: Rare US Warning of Imminent 'Extremist' Attack Sparks Backlash in Russia
How did they know?? About an attack on March 21.
Because they were in on the planning, just like January 6th.