The Prime Minister, David Cameron, introduced the debate and the Leader of the Opposition, Ed Miliband, responded on behalf of the Opposition.
Watch and read the views expressed by MPs who took part in the debate. A list of those MPs that voted can be found at the end of the debate in Commons Hansard (Ayes 557: Noes 13).
United Nations Security Council Resolution 1973
The Security Council of the United Nations passed Resolution 1973 on Thursday 17 March 2011. The Resolution expresses 'grave concern at the deteriorating situation, the escalation of violence, and the heavy civilian casualties' in Libya.
The Resolution 'demands the immediate establishment of a cease-fire and a complete end to violence and all attacks against, and abuses of, civilians'.
The Resolution also 'authorizes Member States... to take all necessary measures... to protect civilians and civilian populated areas under threat of attack in the Libyan Arab Jamahiriya, including Benghazi, while excluding a foreign occupation force of any form on any part of Libyan territory'.
And 'decides to establish a ban on all flights in the airspace of the Libyan Arab Jamahiriya in order to help protect civilians'.
Read the UN Security Council Resolution in full:
House of Commons Library analysis
The House of Commons Library regularly produce briefing notes which inform MPs about key issues. The Library has produced several briefing papers on Libya and parliamentary approval for deploying UK Armed Forces.
Prime Minister, David Cameron, made a statement to the House of Commons on Friday 18 March on the UN Security Council resolution on Libya. Watch and read the statement in full and responses from MPs:
Middle East and North Africa
Watch and read recent statements and urgent questions made to the House of Commons on Libya, Bahrain, Egypt and Tunisia.