Political map of East Asia and the Western Pacific 14 August 1900 (Battle of Peking): The Chinese Empire considered the Eight-Nation intervention to suppress the Boxer Rebellion (Eight-Nation Alliance) a violation of its sovereignty and declared war on the foreign powers. At the same time, Chinese troops and Boxers besieged the International Legations in Peking (Siege of the International Legations). However the Allies successfully broke through the siege (Battle of Peking (1900)), forcing the Empress Dowager (Empress Dowager Cixi) to flee her capital.