Bangkok is faced with multiple problems—including congestion, and especially subsidence and flooding—which have raised the issue of moving the nation's capital elsewhere. The idea is not new: during World War II Prime Minister Plaek Phibunsongkhram planned unsuccessfully to relocate the capital to Phetchabun. In the 2000s, the Thaksin Shinawatra administration assigned the Office of the National Economic and Social Development Council (NESDC) to formulate a plan to move the capital to Nakhon Nayok Province. The 2011 floods revived the idea of moving government functions from Bangkok. In 2017, the military government assigned NESDC to study the possibility of moving government offices from Bangkok to Chachoengsao Province in the east.