The Belt and Road Initiative (BRI, or B&R), known within China as the One Belt One Road () or OBOR for short, is a global infrastructure development strategy adopted by the Chinese government in 2013 to invest in more than 150 countries and international organizations. It is considered a centerpiece of the Chinese leader Xi Jinping's foreign policy. The BRI forms a central component of Xi's "Major Country Diplomacy" (大国外交) strategy, which calls for China to assume a greater leadership role for global affairs in accordance with its rising power and status. It has been compared to the American Marshall Plan. , 155 countries were listed as having signed up to the BRI. The participating countries include almost 75% of the world's population and account for more than half of the world's GDP. Xi originally announced the strategy as the "Silk Road Economic Belt" during an official visit to Kazakhstan in September 2013. "Belt" is short for the "Silk Road Economic Belt," referring to the proposed overland routes for road and rail transportation through landlocked Central Asia along the famed historical trade routes of the Western Regions; whereas "road" is short for the "21st Century Maritime Silk Road", referring to the Indo-Pacific sea routes through Southeast Asia to South Asia, the Middle East and Africa. Examples of Belt and Road Initiative infrastructure investments include ports, skyscrapers, railroads, roads, bridges, airports, dams, coal-fired power stations, and railroad tunnels. The initiative was incorporated into the Constitution of the Chinese Communist Party in 2017. The Xi Jinping Administration describes the initiative as "a bid to enhance regional connectivity and embrace a brighter future." The project has a target completion date of 2049, which will coincide with the centennial of the People's Republic of China (PRC)'s founding. Numerous studies conducted by the World Bank have estimated that BRI can boost trade flows in 155 participating countries by 4.1 percent, as well as cutting the cost of global trade by 1.