Russia has issued a warning that Cuba's energy crisis is now critical. Kremlin spokesman Dmitry Peskov said Moscow is exploring ways to help Cuba amid "suffocating measures" from the United States. The US cut oil shipments to Cuba following the intense raid on Venezuela's President Nicolas Maduro earlier this year. Peskov said, "The situation is really critical in Cuba," blaming US actions for causing severe difficulties. Russian Foreign Minister Sergey Lavrov expressed Moscow's support for Cuba and Venezuela, stating, "We are convinced that only they can determine their own destiny." Cuba faces a severe fuel shortage that has forced emergency steps like a four-day work week in state companies, limited fuel sales, and fewer school hours. Jet fuel is running out, leading Air Canada to stop flights to Cuba. Cuban Foreign Minister Bruno Rodriguez criticized Washington's policy as "cruel aggression" aimed at "breaking the political will of the Cuban people." He added, "The situation is tough and will demand great sacrifice," but affirmed Cuba's "willingness to engage in dialogue," on its own conditions. Mexican President Claudia Sheinbaum defied US threats by promising to support Cuba and work to restore oil supplies. She strongly condemned the sanctions, saying, "You cannot strangle a people like this. It's very unfair, very unfair." The US under President Trump labelled Cuba a "threat" and threatened tariffs on countries supplying Cuba with oil. Mexico, Cuba's second-largest oil provider, faces pressure due to its close trade ties with the US. As the energy crisis deepens, international warnings rise. UN Secretary-General Antonio Guterres warned of a humanitarian "collapse" if Cuba's fuel needs remain unmet. Meanwhile, Russia continues its support for Cuba amid mounting global tensions.