MEXICO has sent more than 800 tons of aid to Cuba, it was reported on Sunday.The shipment of around 814 tons of food to Cuba is a gesture of support following US threats to slap sanctions on any country supplying it with oil. It follows a Chinese donation of 60,000 tons of rice — about six weeks’ supply for the island — last month to ease food shortages caused by the tightening US blockade.Mexico described the shipment as a symbol of “solidarity and humanitarian aid.”