now boeing joining ge, which sends the head of oil and gas business to iran last month, boeing still faces two major hurdles. it's still difficult for companies to get loans for western banks and any deal needs final approval from the u.s. government and may not include the technology needed to make parts locally. that could touch nerves at home. >>> what does one of the most famous financial whistle blowers think of the panama paperes lea? we spoke to him to find out. >> reporter: you might think he would be cheering on the disclosures but today he's raising questions about the source of the information that is shaking political regimes around the world. a u.s. citizen, spent years working as a banker in switzerland and turned over an enormous volume of information to u.s. authorities. for his trouble he earned himself two years in the u.s. prison and 104 million dollar reward from the irs. in an exclusive interview today from germany, he called in to question the unknown source of the leak of the panama papers. >> the very fact that we see all these names surface that are the direc