Mark Urban reports on the strength of the coalition against Libya and who is doing what in the operation, and assesses whether Colonel Muammar Gaddafi is himself being targeted in the raids.
We will be discussing the conflict with diplomat Sir Jeremy Greenstock and Foreign Office Minister Alistair Burt.
And Michael Crick will report on the Commons debate and vote on the UK's involvement in the military action.
Tim Whewell has a report on the unrest and political turmoil in Yemen, and we will be speaking to the Yemeni ambassador to the UN who has resigned.
Plus David Grossman has a report on energy costs, whether we are paying too much and Ofgem's proposals for shaking the industry up.
click here to see where to watch or .
Ready to Watch Newsnight, Season 2011, Episode 55?