This is a scene from the 2015 movie Sicario.

In this clip, CIA officer Matt Graver (Josh Brolin) explains the brutal reality of their mission to a disillusioned FBI agent, Kate Macer (Emily Blunt). He reveals that their mysterious operative, Alejandro (Benicio del Toro), is not working for any government agency but for anyone who will help him get revenge on the cartel boss who murdered his wife and daughter. The goal isn't to end the drug trade but to create enough chaos to consolidate power back into a single, more manageable cartel, referencing the "order" of the Medellín Cartel's era. The video culminates with Alejandro confronting and executing that very cartel boss.