President Donald Trump signed an executive order imposing sanctions on entities supporting Cuba's security, corruption, and human rights violations.
The order permits State and Treasury Departments to add further economic penalties on anyone linked to sanctioned parties.
Cuba faces ongoing blackouts due to disrupted crude oil and fuel shipments amid the U.S. embargo and new sanctions.
Secretary of State Marco Rubio labeled Cuba a national security threat, accusing it of aiding Chinese and Russian forces.