The Trump administration has sought an indictment against former Cuban leader Raul Castro.
The move marks a sharp escalation in US pressure on Havana over the 1996 shootdown of a civilian aircraft.
Officials say the legal action is part of a broader campaign targeting Cuba’s leadership and state-linked networks.
The indictment effort is expected to significantly worsen already strained US-Cuba relations.
Cuban officials have condemned the move, calling it politically motivated and warning of further retaliation.
