Bahrain has revoked the citizenship of 31 opposition activists for having allegedly “undermined state security.” The list includes two former members of parliament with Bahrain’s main opposition party, the Shia al-Wefaq, and the son of a prominent opposition activist who is serving life behind bars. The move comes days after the U.S.-backed Bahraini monarchy banned all protests and gatherings following a wave of demonstrations. Bahrain is a key U.S. government ally, hosting the Navy’s Fifth Fleet.