CAIRO (Reuters) – British Prime Minister Rishi Sunak has said he will raise the case of Egyptian-British hunger striker Alaa Abd el-Fattah with Egypt’s leadership during the COP27 climate summit that opened on Sunday, the same day Abd el-Fattah said he would stop drinking water. Abd al-Fattah rose to prominence with Egypt’s 2011 uprising but has been detained for most of the period since. Sentenced most recently in December 2021 to five years on charges of spreading false news, he has been on hunger strike for 219 days against his detention and prison conditions. In a letter dated Nov. 5 to Ab…