The Trump administration has expanded its pressure campaign against Cuba into the critical minerals sector, sanctioning a nickel joint venture tied to Canadian miner Sherritt International in a move that could reverberate through China-linked battery supply chains. Secretary of State Marco Rubio announced sanctions on Thursday against Moa Nickel SA, a joint venture between Sherritt and Cuba’s state-owned General Nickel Company, as part of a broader effort targeting Havana’s military-controlled..