The United States Department of Defense works to provide the United States' military forces needed to deter war and protect the security of the country.
In 2011, former CIA director Leon PanettaLeon Panetta took over as Secretary of Defense from a retiring Robert Gates. At the same time, the U.S. took a lead role in orchestrating and participating in, along with 18 countries and 14 NATO allies, a military operation to support and protect civilians in Libya from Colonel Muammar el-Qaddafi's attacks on the people of Libya. And, in May 2011, a number of United States military and intelligence agencies collaborated in the CIA-led assault on a compound in Abbottabad, Pakistan, where a team of U.S. Navy Seals killed terrorist leader Osama bin Laden.