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File photo taken on May 24, 2019 shows British Prime Minister Theresa May returning to 10 Downing Street after announcing her resignation in London, Britain. (Xinhua/Alberto Pezzali)
File photo taken on May 24, 2019 shows British Prime Minister Theresa May returning to 10 Downing Street after announcing her resignation in London, Britain. (Xinhua/Alberto Pezzali)