Boris Johnson made comments during Commonwealth meeting in Rwanda
Majority of local cases are men who have sex with men
Rule takes effect in 2022-2023 season
U.S.-based groups attacking transgender Israelis
Education Secretary Miguel Cardona made announcement on Thursday
Organizers sharply criticized authorities' decision
Comedian has been criticized over anti-trans comments
Says policy necessary because of 'biological performance gap'
Country's trans culture dates back centuries
Washington Post and University of Maryland conducted survey
