News of the shocking attack in Woolwich on a serving British soldier is the kind of phone call prime ministers and home secretaries dread. With the police investigation in its early stages how open should politicians be with an angry public thirsty for information?
Joining Tom Clark in the studio this week: Observer columnist Nick Cohen, Guardian political diarist Hugh Muir and Max Wind-Cowie of the Demos think tank.
Also this week: after rows over Europe, same-sex marriage and the attitude of party grandees towards the grassroots, David Cameron attempts to get a grip on his party. But is the modern Conservative party simply ungovernable?
We look at the cross-party support for a crackdown on corporate tax avoidance. But are moral arguments and promises of "international co-operation" enough to convince multinational firms to change their ways?
And finally we hear from our correspondent Ewen MacAskill who has been following the three-pronged scandal hovering over Barack Obama's second term. Is he a lame duck already?
