TOKYO (Reuters) -Japan will export used navy destroyers to the Philippines to strengthen its deterrence against China's maritime expansion, the Yomiuri newspaper reported on Sunday, as the two U.S. allies increase cooperation to counter Beijing. The export plan involves six Abukuma-class destroyer escorts in service with the Japan Maritime Self-Defense Force for more than three decades, the Japanese daily said, citing multiple unnamed government sources. Defence ministers Gen Nakatani and Gilberto Teodoro agreed to the destroyer export when they met in Singapore last month, the Yomiuri said, adding that the Philippine military will inspect the ships this summer as part of the final preparations.