Rob Lee @RALee85
I believe Russia now has 5 production model Su-57 fighters: bort blue 01, red 02, and red 52-54. As a reminder, the first "serial" Su-57 crashed right before it was to be delivered in December 2019. These fighters don't have the 2nd-stage engine. https://t.co/QrmtaNaen3 — PolitiTweet.org