China is offering solar energy to Cuba, an old ally left without power amid the US oil embargo, in a show of strength for Chinese renewable-energy credentials and a sign of Beijing’s economic footprint in Latin America. Beijing’s ambassador to Cuba, Hua Xin, on Monday outlined joint energy projects in progress as part of an effort to ease a “complex power situation” in the Caribbean nation, the Cuban Ministry of Foreign Affairs said. “China has always maintained that Latin America and the...