CAIRO (Reuters) – The sister of Egyptian-British activist Alaa Abd el-Fattah said on Monday the family had received a letter from prison that served as “proof of life” from the hunger striker, who said he had resumed drinking water. Abd el-Fattah, who has been on hunger strike against his detention and prison conditions for more than 220 days, had said he was escalating his protest by ceasing to drink water on Nov. 6, the opening day of the COP27 climate summit in Egypt. Since then his family and his lawyer had made repeated trips to the prison where he is detained northwest of Cairo, but had …