New details have been revealed on the Obama administration’s weapons sales to Bahrain during the ruling monarchy’s ongoing crackdown on opposition protesters. The website ProPublica reports the United States has sold weaponry, including ammunition, combat vehicle parts, communications equipment, Black Hawk helicopters, and an undisclosed missile system, to Bahrain since the protests began nearly two years ago. It is unclear if all the purchases were delivered, but they provide a key window into the extent of U.S. support for the Bahraini regime as it faced international condemnation for repressing dissent. Although the weapons are supposed to only be used for self-defense, some may have been used against civilian demonstrators. Bahraini helicopters reportedly fired on protesters in March 2011, around the same time Bahrain made a helicopter-related acquisition from the United States.