Correspondents' despatches: the wealthy principality of Liechtenstein is forced to face up to the idea of belt-tightening, Alex Marshall; Alastair Newton Brown strolls through the streets of the Iranian capital, Tehran where he finds people keen to engage with the West; Rajini Vaidyanathan in Washington considers the implications of the jail sentence handed down to secrets leaker Bradley Manning; Justin Rowlatt may have struggled to appreciate traditional Vietnamese music but more and more Vietnamese, he says, are keen to learn it. And Kevin Connolly is in Cairo where he's been hearing members of the Muslim Brotherhood explain why they believe they're a force that's not about to go away.