{"product_id":"agent-sonya-mi5-and-the-david-burke-9781803999869","title":"Agent Sonya, Mi5 and the Kuczynski Network","description":"\u003cp\u003e\u003cb\u003eIn 1933, the celebrated German economist Robert Kuczynski and his wife Berta arrived in Britain as refugees from Nazism, followed shortly afterwards by their six children. Jürgen, known to be a leading Communist, was an object of considerable concern to MI5.\u003c\/b\u003e Ursula, codenamed Sonya, was a colonel in Russia's Red Army who had spied on the Japanese in Manchuria, while MI5 also kept extensive files on her four sisters, Brigitte, Barbara, Sabine and Renate. In Britain, Ursula controlled the spies Klaus Fuchs and Melita Norwood, without whom the Soviet atomic bomb would have been delayed for at least five years.\u003c\/p\u003e\u003cp\u003eDrawing on newly released files, \u003ci\u003eAgent Sonya, MI5 and the Kuczynski Network\u003c\/i\u003e reveals the operations of a network at the heart of Soviet intelligence in Britain. Over seventy years of espionage activity the Kuczynskis and their associates gained access to high-ranking officials in the government, civil service and justice system. For the first time, acclaimed historian David Burke tells the whole story of one of the most accomplished spy rings in history.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e David Burke\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1803999861\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781803999869\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e History Press\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 10\/28\/2025\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback","brand":"David Burke","offers":[{"title":"Paperback","offer_id":49097171075327,"sku":"9781803999869","price":28.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/www.whiterainbookhouse.com\/products\/agent-sonya-mi5-and-the-david-burke-9781803999869","provider":"WR Book House","version":"1.0","type":"link"}