Since the rise to power of Xi Jinping in 2013, Governments across the globe are having to learn to how deal with an assertive and powerful China determine to put its stamp on international affairs. Over the next two weeks we’re going to trace the diplomatic and economic transformation of China - from one of the poorest and most isolated nations on earth to the powerhouse it is today. This week the focus is diplomatic – specifically the 1972 US Presidential visit to China - and the meeting between President Nixon and Chairman Mao.