Chinese Premier Li Keqiang (C) attends the signing ceremony of the Mombasa-Nairobi railway agreement with Kenyan President Uhuru Kenyatta (3rd R, rear), Ugandan President Yoweri Museveni (2nd R, rear), Rwandan President Paul Kagame (5th R, rear), and South Sudan's President Salva Kiir (R, rear), as well as representatives from Tanzania, Burundi and African Development Bank, at the State House in Nairobi, Kenya, May 11, 2014. (Xinhua/Li Xueren)