Cambodia’s prime minister says raising Taiwan’s flag is banned because Cambodia follows the “One China” policy promoted by Beijing. Hun Sen, in a speech to the Cambodian-Chinese Association posted on his Facebook page, said he welcomes investment from Taiwanese businesspeople, but that respecting Chinese sovereignty means acknowledging Taiwan is a province of China. He said in his remarks, delivered Saturday, that Taiwan’s flag shouldn’t be raised on its national day. Hun Sen, who has led his country for three decades, said this has always been his policy. He has in the past rebuffed Taiwanese efforts to open an official representative office in Cambodia, and reaffirmed that position in his speech. He also told his audience that Cambodia holds the same policy toward Tibet, recognising China’s sovereignty against claims for independence of what China calls the Tibet Autonomous Region. China is impoverished Cambodia’s key ally and economic partner. It has provided millions of dollars in aid and investment over the past decade, granted it tariff-free status on hundreds of trade items, and written off debt. In return, Cambodia supports China in international forums, including in Beijing’s ongoing territorial disputes with other Southeast Asian countries in the South China Sea.