The end of the US-Iraq conflict has thrown up more questions than before. BBC's Hardtalk seeks some answers even as it has a packed schedule over the weekend and early next week. The issues covered include the aftermath of the US-Iraq conflict and health-related issues in Britain.

Saturday, 19 and 20 April - Tim Sebastian engages Shashi Tharoor, UN under secretary of state, in a tête-à-tête. The international community is bitterly divided over what role the United Nations (UN) should play in Iraq - but what does the UN itself think? Shashi Tharoor is also a special adviser to UN chief Kofi Annan. Tim Sebastian asks him could the UN also do with some serious reconstruction - alongside Iraq?

This will be followed by a discussion between Sergio Vieira de Mello, UN high commissioner for human rights with Tim Sebastian. With debate underway on exactly what role the United Nations should play in the reconstruction of Iraq. Tim Sebastian talks to de Mello and the astute anchor will seek answers to questions such as: Why should the UN and not the US take a leading role, and will the Security Council members agree on a way forward? And how does the United State's human rights record, especially its treatment of prisoners in Guantanamo Bay, stand up to scrutiny?

Monday, 21 April - Fadhil Chalabi, executive director of the Centre for Global Energy Studies and James Placke, Cambridge Energy Associates in Washington, with Tim Sebastian. The issue which will be touched upon is - as the military campaign winds down in Iraq a lot of attention is shifting to the country's most precious resource - its oil. The Bush administration has said repeatedly that the oil belongs to the Iraqi people and "will not be exploited for the United States' own purposes."

Even so contracts have already been handed out to American companies to help rebuild Iraq's oil industry. Fadhil Chalabi was an official at the Iraqi Ministry of Petroleum in the 1970s and James Placke is a former US deputy assistant secretary of state for Near Eastern Affairs. Will the Americans remain true to their word? And should the UN retain control over the production of Iraqi oil until a democratic regime is installed?

Tuesday 22 April - Ian Perkins, National Health Service (NHS) whistleblower, speaks to Tim Sebastian. A senior health service official in Britain, who was sacked after alleging that his hospital had fiddled its waiting list figures, comes before an employment tribunal. The issue of waiting lists is very sensitive politically, and his allegations go to the heart of the controversy over political pressure on the NHS. Health institutions in Britain are under constant pressure to meet targets, and last year the National Audit office named nine health trusts which were found to have massaged their figures in order to hide problems. Tim Sebastian asks finance director Ian Perkin whether he regrets speaking out?