Here's some background information about the civil war that took place in Libya in 2011.
Timeline: February 16, 2011 - Police crack down on protesters as anti-government demonstrations take place in Benghazi. Within days, the protests spread to Tripoli and more than 200 people are killed amid the upheaval.
February 22, 2011 - Gadhafi makes a defiant speech, vowing to die a martyr rather than step down.
February 24, 2011 - Gadhafi blames the unrest in Libya on al Qaeda and Osama bin Laden. He also states that protestors are being fed drugs and manipulated.
February 25, 2011 - US President Barack Obama signs an executive order freezing Gadhafi's assets.
February 26, 2011 - The UN Security Council imposes sanctions against Libya, including an arms embargo and asset freezes. It also refers Gadhafi to the International Criminal Court for alleged crimes against humanity.
- The opposition movement announces that it has picked former Justice Minister Mustafa Abdul Jalil to lead a caretaker administration.
February 28, 2011 - The European Union bans the sale of arms and ammunition to Libya and freezes the assets of Gadhafi and five members of his family.
March 5, 2011 - The UN announces that it is studying a request to appoint Ali Abdussalam Treki as the nation's ambassador.
March 13, 2011 - Secretary of State Hillary Clinton meets in Paris with Mahmoud Jibril, the leader of the opposition group, Transitional National Council.
March 17, 2011 - The UN Security Council votes to impose a no-fly zone over Libya and take "all necessary measures" to protect civilians.
March 19, 2011 - French, British and American military forces begin the first phase of Operation Odyssey Dawn, aimed at enforcing the no-fly zone. More than 110 Tomahawk missiles fired from American and British ships and submarines hit about 20 Libyan air and missile defense targets.
March 20, 2011 - Gadhafi, speaking early Sunday on Libyan state TV, said the UN charter provides for Libya's right to defend itself in a "war zone." Weapons depots will be opened, he says "All you people of the Islamic nations and Africa, and Latin America and Asia, stand with the Libyan people in its fight against this aggression," Gadhafi says.
March 28, 2011 - President Barack Obama addresses the American public on the situation in Libya. "Tonight, I can report that we have stopped Gadhafi's deadly advance," Obama says. He declares that the United States will "support the aspirations of the Libyan people" as the "military effort ratchets down."
March 29, 2011 - Representatives from more than 40 countries and organizations meet in London to establish a "Libya Contact Group." The group will coordinate the international response to the crisis.
March 30, 2011 - Libyan Foreign Minister Moussa Koussa arrives in Great Britain and announces that he has resigned his post.
March 31, 2011 - NATO announces that it has taken sole command of air operations to "protect civilians and civilian-populated areas from
attack or the threat of attack." The campaign is called Operation Unified Protector.
April 4, 2011 - Foreign Minister Franco Frattini announces that Italy will become the third country, after France and Qatar, to recognize the rebel Libyan National Transitional Council as the legitimate international representative of Libya.
April 6, 2011 - A senior Obama administration officials announces that Gadhafi has sent the president a letter urging him to end the NATO bombing campaign.
April 20, 2011 - Oscar nominated filmmaker Tim Hetherington and photojournalist Chris Hondros are killed in Misrata.
April 30, 2011 - Gadhafi speaks on state TV and says he is ready to negotiate a ceasefire but that he will not step down.
May 22, 2011 - Catherine Ashton, foreign policy chief for EU, arrives in rebel stronghold, Benghazi, where the EU is opening an office.
June 1, 2011 - Libya's oil minister says he's defected from Gadhafi's government and has joined the opposition movement.
- NATO extends its mission in Libya for another 90 days.
June 8-15, 2011 - Several countries, including the United States, Spain, Germany and Canada, recognize the opposition-led National Transitional Council as Libya's legitimate representative.
June 14, 2011 - South African President Jacob Zuma says that NATO is misusing the UN resolutions meant to protect civilians, in order to pursue regime change and assassinate Gadhafi.
June 15, 2011 - The White House announces that the US has spent $716 million on military operations and humanitarian assistance in Libya through June 3. The cost is expected to reach $1.1 billion by September 30.
June 27, 2011 - The ICC issues arrest warrants for Gadhafi, his son and his brother-in-law for crimes against humanity.
August 21, 2011 - Rebels advance on Tripoli and capture two of Gadhafi's sons. A government spokesman says some 1,300 people have been killed and about 5,000 have been wounded in 12 hours of fighting.
August 23, 2011 - A spokesman for the National Transitional Council claims that rebels now control 90% of the country; Gadhafi's whereabouts are reportedly unknown.
- Russia recognizes the National Transitional Council as Libya's official government.
- 60 countries meet in Paris to discuss Libya's transition from Gadhafi's rule to democracy.
September 12, 2011 - Jalil addresses supporters in Martyrs' Square in Tripoli and says, "We aim to establish a state of law, a state of welfare, a state where Islamic Sharia law is the main source of legislation."
September 16, 2011 - The UN General Assembly announces that the National Transitional Council will represent Libya during the annual General Assembly later in September. The UN Security Council unanimously adopts a resolution to establish a support mission for Libya for the next three months.
September 20, 2011 - At the UN General Assembly, Interim Prime Minister Jibril says that he expects Libya to have a new government within 10 days. Ban Ki-moon congratulates the transitional leadership and directs that the country's new flag be presented alongside the UN flag.
September 24, 2011 - Jibril addresses the UN General Assembly.
September 29, 2011 - US Senator John McCain and other members of Congress tour Libya. They meet with members of Libya's interim governing council, military commanders and Libyan citizens. They also visit a prison to see the conditions.
October 20, 2011 - Gadhafi is killed after being captured by rebel forces.
October 23, 2011 - Libya's interim leaders declare the nation's freedom in Benghazi.
October 27, 2011 - The UN Security Council votes unanimously to end military operations in Libya.
October 31, 2011 - The National Transitional Council elects Abdurrahim El-Keib as acting prime minister, with the support of 26 of the 51 members who voted. NATO announces the official end of its mission in Libya.
November 19, 2011 - Gadhafi's son, Saif is captured after a firefight in southern Libya. Military officials say they believe he was trying to reach neighboring Niger, where his brother, Saadi, was granted asylum.
December 2011 - Al Qaeda is making an effort to build a jihadist fighting force in Libya, according to a Libyan source briefed by counter-terrorism officials.