Charles Dallara, managing director of the Institute of International Finance, which represents large global banks, describes the deal that was reached by eurozone leaders for restructuring Greece's debt in July 2011. He was one of the key negotiators. He says the agreement helps prevent contagion to Spain and Italy, and helps increase confidence in banks. By showing the losses are better understood and seen as manageable conveys a message that builds confidence for the banks and for the EU. And the effort to create the conditions for growth in Greece will make all the difference, he says. The Institute of International Finance estimates the deal will cost the banks and other investors $54 billion. Dallara says the turning point in the talks came in mid-July when European governments agreed to a plan for banks to swap Greek debt for new securities, backed by collateral.The focus then shifted to shaping the details. Josef Ackermann, chief executive of Deutsche Bank and chairman of the International Finance Institute, used his skills to pull the package together with European leaders. Dallara has experience going back to his days working on the negotiations for the Brady deal for Latin American debt in the 1980's. The Brady deal was also designed around banks swapping the old bonds for new ones with longer maturities and reduction of principal, and lower interest rates. In return the banks were given guarantees of repayment removing uncertainty- through 30 year U.S. zero coupon bonds- and making it possible for banks to start anew. The reduction of principal in the July 2011 eurozone agreement is around 20%, the Brady reduction was much larger, around 30%. This suggests eurozone governments are putting up more of the funds in this situation with the weaker condition of banks which may need to be recapitalized at some point, and the preservation of the euro itself at stake....