Much — too much — has been written in a journalistic, superficial vein about Greek Finance Minister Yanis Varoufakis and last month’s negotiations with the European Union. But now that the lines have hardened and are clearer for us all to see, a new situation has opened up.

The scenario of Greece leaving the eurozone (“Grexit”) is more frequently and explicitly posed as the only way that Syriza’s government can avoid backtracking on its campaign promises.

To discuss this question in greater depth, we spoke with Syriza Member of Parliament Costas Lapavitsas. Lapavitsas is, in many ways, the anti-Varoufakis, not only in style and personal trajectory but, more importantly, in terms of political line — he has become the figure most identified with a clear and frank break with the Syriza leadership’s “good euro” policy.