Cuba's government said on Wednesday that the US oil blockade that has crippled the island is preventing the United Nations from distributing 170 containers of humanitarian aid.
US President Donald Trump has set his sights on ending more than six decades of communist rule in Cuba.
In January, he cut off oil supplies to Washington's arch-foe from its main supplier Venezuela and threatened other countries with sanctions if they came to Cuba's rescue.
Since then, only one oil tanker, from Russia, has made it through.
Cuba's Foreign Minister Bruno Rodriguez said that 170 containers of UN aid worth $6.3 million (€5.4 million) "is not reaching beneficiaries due to the fuel shortage."
