CNN reports that Iran has released Iranian-American social scientist Kian Tajbakhsh.
The United States deploys a carrier strike group and a bomber task force to the Middle East to respond to threats from Iran. A U.S. official told CNN, "... the threats were against both U.S. maritime and land-based forces in the region."
The United Arab Emirates tells the UN Security Council that a "state actor" was most likely behind the May 12 attacks on four tankers off its coast, including ones from Saudi Arabia and Norway. UAE did not say who it suspected; the United States blamed Iran which denied the accusation.
A rocket explodes inside the heavily fortified Green Zone sector of Iraq's capital, landing less than a mile from the U.S. Embassy in Baghdad amid heightened tensions in the region between the United States and Iran.
The United States Department of State orders all non-emergency, non-essential government employees at the U.S. Embassy in Baghdad and Erbil consulate office to leave Iraq amid heightened tensions in the Persian Gulf between the United States and Iran.
The United States Maritime Administration (MARAD) issues a new alert to all ships passing Fujairah, off the coast of the United Arab Emirates on the Gulf of Oman over "acts of sabotage" amid heightened regional tensions between the United States and Iran.