In response, an Eight Nation Alliance of American, Austro-Hungarian, British, French, German, Italian, Japanese, and Russian troops was organized to lift the siege. The Eight-Nation Alliance, after being initially turned back by the Boxer militia (and allied Imperial Chinese military elements) brought 20,000 armed troops to China, defeated the Imperial Army in Tianjin, and arrived in Beijing on 14 August, relieving the siege of the Legations. Uncontrolled plunder of the capital and the surrounding countryside ensued, along with summary execution of those suspected of being Boxers. The Boxer Protocol of 7 September 1901 provided for the execution of government officials who had supported the Boxers, provisions for foreign troops to be stationed in Beijing, and 450 million taels of silver—approximately $10 billion at 2018 silver prices and more than the government's annual tax revenue—to be paid as indemnity over the course of the next 39 years to the eight nations involved.