A cautious welcomeALREADY a seasoned visitor to Africa, Hu Jintao is back again. China's president is on a 12-day tour of the continent taking in eight countries that began on Tuesday January 30th. This follows quickly (given the glacial pace of most diplomacy) after the first ever Sino-African summit in Beijing last November. Both are obvious and public signs of the deepening relationship between Asia's economic g
