Obama condemns US diplomatic killings in Libya All four died when a rocket struck their car during an attack on the mission in the eastern city of Benghazi on Tuesday night. Obama condemned the killings and ordered a security review following the attack by suspected al Qaeda-linked militants. We're working with the government of Libya to secure our diplomats. I've also instructed my administration to increase our security at diplomatic posts around the world. And make no mistake, we will work with the Libyan government to bring to justice to the killers who attacked our people," said Obama. The United Nations also condemned what it described as a "horrific and tragic attack." Libya's ambassador to the UN has told the Security Council that an investigation is underway. More about: Attack, Barack Obama, Diplomatic tension, Hillary Clinton, Libya