Shot at Kelenföld power station (and Mátra Power Plant), a famous shooting location for Chernobyl Diaries - La mutazione (2012) and many other films.
The movie ( released January 2021 ) depicts pro-Russian terrorists trying to help annex Ukraine to Russia 15 years in the future ( 2036 ) ; it actually happened only about 15 months later, in February 2022.
Leo's (Anthony Mackie) arms when he runs resemble the way the Terminator T1000 runs after Sarah Conner and T800 in Terminator 2 - Il giorno del giudizio (1991).
A comment made by Leo about wearing "sunblock 500" in case of nuclear attack mirrors Sarah Connor's comment of "wearing sunblock 2 million" of another nuclear attack in Terminator 2 - Il giorno del giudizio (1991), another robot/android movie.
There are several ties between Anthony Mackie's character and his appearance in the Marvel Cinematic Universe (MCU). He is often referred to as "Cap", is called a "war machine", and even states that "I could do this all day."