. >> reporter: but fred bergsten of the peterson institute says the sustainability of the eurozone is riding on its members' abilities to get their fiscal houses in order. >> the long-term issues are critically important. europe created an economic and monetary union that was adequate on the monetary side, but inadequate on the economic side, and the whole experiment with the euro will collapse unless they get that reconciled. >> reporter: bergsten says austerity is important, but agrees europe's leaders should also look hard for ways to get their economies moving again. bergsten says right now europe is not out of the woods, but he thinks the e.u., and the euro, will emerge stronger than ever. >> in the current crises, they have never gotten ahead in the sense of fully assuaging market anxieties, but at each stage when there could have been a collapse, they've come up with the necessary money, the necessary programs, and new institutional changes which are now underway which will also in the process lead them to come out stronger. >> reporter: austerity measures are already having a

and i and largely have that as the branch that i least -- least bergsten.kind of get the judiciary and work for years and the executive branch. congress is still somewhat of a mystery. i will say, in my time in the white house i was impressed with some of the people who worked with two are on capitol hill, impressed by how much they care about ideas, impressed by how much they knew what they did know. our ability to work productively was one of the things i really cherish. i also, maybe this helps, a student of the constitution. article one comes 04 article to, so it's a symbolic gesture, but i never ask for them to come to me. i go to them. i try to the extraordinarily diligent cover returning phone calls come e-mails. and they were extraordinarily interested in hearing what we had to say. we tried to brief congress. i think that often is what kids sometimes people into trouble. if she told us we could have told you x, y, nc. my not have done that way. i think there was nothing have worked on where i ever got that sort of call. i was lucky. also the issues