David Miliband at the UN climate change conference: day two

David Miliband, the environment secretary, today branded David Cameron's proposals for "binding" annual targets to cut greenhouse gases as "silly".

In the second instalment of a week of podcasts from Nairobi, he suggested that a more sensible approach would be the government's current proposals for annual reporting back to the Commons on cuts and reductions - with no legislative penalties for ministers if targets are not met.

Mr Miliband today said it was "genuinely uncertain as to whether the world community can come together and put aside its short-term interests" to achieve a result by the end of the week.

Do you agree with secretary of state? Should he be pushing to go further and faster than his parliamentary rivals?

Guardian Unlimited will be putting your points of view to Mr Miliband later this week. Please post your questions or comments below.

Listen to today's podcast here
Listen to Monday's podcast here