The often-repeated narrative that “Ukraine rejected a peace deal offered by Russia in the spring of 2022” is “one of the favorite lies promoted by Russia,” said Foreign Minister Dmytro Kuleba in a video address posted on X on May 14. The failed peace negotiations between Russia and Ukraine, which were held in Istanbul shortly after the beginning of the full-scale war, have been a regular feature of disinformation campaigns spread by Russia and its allies. One popular theory, which is unsupported by accounts of the talks at the time, is that former U.K. Prime Minister Boris Johnson sabotaged th…