Question: Harold Robert Isaacs, was an American journalist and political scientist, Isaacs went to China in 1930 and became involved with left wing politics in Shanghai and wrote "The Tragedy of the Chinese Revolution", about the Chinese Revolution of 1925-27, first published with a preface by which now deceased, Marxist revolutionary, theorist, and Soviet politician?

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United Red Army: The United Red Army (連合赤軍 , "Rengō Sekigun" ) was a Japanese revolutionary armed group, established on 15 July 1971.  It united the Marxist–Leninist-Maoist Red Army Faction (赤軍派 , "Sekigunha" ) , led in 1971 by Tsuneo Mori, and the Reformed Marxist Revolutionary Left Wing group, Japanese Communist Party Kanagawa Prefecture Committee, aka Keihin Anti-Security Treaty Joint Struggle Group (京浜安保共闘 , "Keihin Anbo Kyoutou" ) led by Hiroko Nagata.  The United Red Army had 29 members and lost 14 by killing them in less than a year.  Most were members of the New Left.

Far-left politics in the United Kingdom: Far-left politics politics in the United Kingdom have existed since at least the turn of the 20th century, with the formation of various Marxist, anarchist and syndicalist organisations.  Following the 1917 Russian Revolution and developments in international Marxism, groups advocating an array of far-left ideologies developed, such as Marxist-Leninism, Left Communism and Trotskyism.  Following the 1949 Chinese Revolution, further international developments from the 1960s led to the emergence of Maoist (and later Hoxhaist) groups.  Political schisms within Trotskyism also created a number of new political organisations in the late 1940s and between the 1970s and 1990s.

A. Doak Barnett: Arthur Doak Barnett (8 October 1921, Shanghai – 17 March 1999 Washington, D.C.), known as A. Doak Barnett, was an American journalist, political scientist, and public figure who wrote about the domestic politics and the foreign relations of China and United States-China relations.  He published more than 20 academic and public interest books and edited still others.  Barnett's parents were missionaries in China, and Barnett used his Chinese language ability while travelling widely in China as a journalist before 1949.  He grounded his journalism and his scholarship in exact detail and clear language.  Starting in the 1950s, when there were no formal diplomatic relations between the United States and the People's Republic of China, he organized public outreach programs and lobbied the United States government to put those relations on a new basis.

States and Social Revolutions: States and Social Revolutions: A Comparative Analysis of France, Russia and China is a 1979 book by political scientist and sociologist Theda Skocpol, published by Cambridge University Press and explaining the causes of revolutions through the structural functionalism sociological paradigm comparative historical analysis of the French Revolution of 1789 through the early 19th century, the Russian Revolution of 1917 through the 1930s and the Chinese Revolution of 1911 through the Cultural Revolution in the 1960s.  Skocpol argues that these three cases, despite being spread over a century and a half, are similar in the sense that all three were social revolutions.

Sally Wolfe: Sarah “Sally” Christine Wolfe (25 December 1885 – 15 July 1975) was a medical missionary who served in China from 1915-1951, despite working amidst much political turmoil.  She came from a strong Methodist family and upon leaving Ireland, became part of the Methodist Missionary Society.  When she arrived in China, Wolfe joined the Jubilee Women’s hospital at the Wesleyan Mission in Hankow, where she worked among other European missionaries and ran Bible classes for women and children.  Wolfe’s time in China was marked by much political strife, as she arrived four years after the Chinese Revolution of 1911 and witnessed the Chinese Civil War, which began in 1927.  In 1951, after serving the Chinese people for nearly forty years, Sally Wolfe left China due to strong xenophobia towards foreign missionaries and conflict between Communists and the Kuomintang (Chinese Nationalist Party).

Chinese Trinidadian and Tobagonian: Chinese-Trinidadian and Tobagonian (sometimes Sino-Trinidadian and Tobagonian or Chinese Trinbagonian) are Trinidadians and Tobagonians of Chinese ancestry.  The group includes people from China, Hong Kong and Overseas Chinese who have immigrated to Trinidad and Tobago and their descendants, including those who have emigrated to other countries (especially the United States, Canada and the United Kingdom, but also to other countries including China).  The term is usually applied both to people of mixed and unmixed Chinese ancestry, although the former usually appear as mixed race in census figures.  Chinese settlement began in 1806.  Between 1853 and 1866 2,645 Chinese immigrants arrived in Trinidad as indentured labour for the sugar and cacao plantations. Immigration peaked in the first half of the twentieth century, but was sharply curtailed after the Chinese Revolution in 1949.  After peaking at 8,361 in 1960, the (unmixed) Chinese population in Trinidad declined to 3,800 in 2000.

China Marines: The term China Marines, also known as "North China Marines", originally referred to the United States Marines, of the 4th Marine Regiment, who were stationed in Shanghai, China from 1927 to 1941 to protect American citizens and property in the Shanghai International Settlement, during the Chinese Revolution and the Second Sino-Japanese War.

Harold Isaacs: Harold Robert Isaacs (1910–1986) was an American journalist and political scientist.  Isaacs went to China in 1930 and became involved with left wing politics in Shanghai and wrote "The Tragedy of the Chinese Revolution", about the Chinese Revolution of 1925-27, first published with a preface by Leon Trotsky.  He covered World War II in Southeast Asia and China for Newsweek Magazine.  In 1953 he joined the department of political science at the Massachusetts Institute of Technology.  In the following years he published "Scratches on our Minds: American Images of China and India", "American Jews in Israel", and "The New World of Negro Americans," among others.  In 1980, he returned to China with his wife, Viola, and wrote an account of the visit, "Re-Encounters in China".

Wang Ming: Wang Ming (; May 23, 1904 – March 27, 1974) was a senior leader of the early Chinese Communist Party (CCP) and the mastermind of the famous 28 Bolsheviks group.  Wang was also a major political rival of Mao Zedong during the 1930s, opposing what he saw as Mao's nationalist deviation from the Comintern and orthodox Marxist–Leninist lines.  According to Mao on the other hand, Wang epitomized the intellectualism and foreign dogmatism Mao criticized in his essays "On Practice" and "On Contradiction".  The competition between Wang and Mao was a reflection of the power struggle between the Soviet Union, through the vehicle of the Comintern, and the CCP to control both the direction and future of the Chinese revolution.

Leon Trotsky: Leon Trotsky ( ;; also transliterated "Lyev", "Trotski", "Trotskij", "Trockij" and "Trotzky".  born Lev Davidovich Bronstein; 7 November 1879 – 21 August 1940) was a Marxist revolutionary, theorist, and Soviet politician.  Initially supporting the Menshevik Internationalists faction within the Russian Social Democratic Labour Party, he joined the Bolsheviks ("majority") just before the 1917 October Revolution, immediately becoming a leader within the Communist Party.  He would go on to become one of the seven members of the first Politburo, founded in 1917 to manage the Bolshevik Revolution.  During the early days of the Russian Soviet Federative Socialist Republic (RSFSR) and the Soviet Union, he served first as People's Commissar for Foreign Affairs and later as the founder and commander of the Red Army, with the title of People's Commissar of Military and Naval Affairs.  He became a major figure in the Bolshevik victory in the Russian Civil War (1918–1923).

Supporting paragraphs: Harold Isaacs Leon Trotsky
Answer: Leon Trotsky