MANILA - The Department of Foreign Affairs (DFA) on Tuesday made an assurance that any move related to exploring and developing resources in the West Philippines Sea would be guided by the Constitution. In a statement, Foreign Affairs pokesperson Ma. Teresita Daza said the DFA acknowledges the recognition of Liu Jianchao, minister of the International Department of the Communist Party of China (CPC), that there are "legal barriers" standing in the way of talks on oil and gas exploration between Beijing and Manila. "As it has always been, the Department is guided by the Constitution on the exploration, development and utilization of natural resources located within the exclusive economic zone, continental shelf and jurisdiction of the Philippines," she said in a text message. "The Department looks forward to working with the DOE (Department of Energy) on a way that is anchored in the Constitution and with the protection and promotion of Philippine national inter