Which will have a bigger impact on the 21st Century, the global financial crisis or the Arab Spring? And can the events even be separated out? Tonight we look at both events.
We have an interview with Nato Secretary General Anders Fogh Rasmussen, as concern at the international community's failure to make a breakthrough in the Libyan conflict looks to be growing.
We will also be talking to Britain's Foreign Secretary William Hague, who has again ruled out military intervention to protect Syrian civilians of the kind recently undertaken in Libya.
Paul Mason is on the frontline of the financial crisis - today's austerity protests in Athens. You can read his reports in his blog - and tonight he will be live on the programme.
And we will be discussing links between the Arab Spring and financial crisis with Black Swan author Nassim Nicholas Taleb and economist and writer Noreena Hertz.
And then it is time for something completely different as we turn our attention to the lunar eclipse - the first total lunar eclipse of 2011 and the longest in nearly 11 years - with amateur astronomer and professional Brian Cox impersonator Jon Culshaw and space scientist Maggie Aderin Pocock.
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