Iran's supreme leader, Ayatollah Ali Khamenei, leads Friday prayers today – with his authority at stake. Ian Black, our Middle East editor, says today is a critical point for the regime.
Edited details of MPs' expenses were published yesterday on parliament's website. Andrew Sparrow, who was sifting through information with Guardian readers on our live blog, shares some highlights.
Four years after the IRA's decision to dispose of its weapons, the loyalist paramilitary Ulster Volunteer Force has taken a significant step towards decommissioning. Ireland correspondent Henry McDonald reports on its significance.
Met Office scientists have produced a map showing how climate change will affect the UK over the next 100 years. Environment correspondent David Adam explains how it will be used.
Michael Bay, the director of Transformers: Revenge of the Fallen, speaks to Jason Solomons in a clip from our Film Weekly podcast.
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