the law firm at the center of the leak, mossack fanseca, specializes in offshore.four decades worth of files. the documents show while russia was subject to u.s. sanctions after it annexed crimea, associates of vladamir putin, ran a multibillion dollar money laundering ring. >> when it comes to governmental leaders there will be lots and lots of questions about the source of the fund. i think we scratched the surface of the beginning of the scandal. >> right now, no americans have been named in the investigation. but the department of justice is reviewing the reports. saying it takes very seriously all kred cal allegations of high level, foreign corruption that might have a link to the united states or the u.s. financial system. former treasury officer, chip ponsey. >> with the level of detail and specificity that has been reported, out of these papers, that it will be, there will be opportunities to identify. and facilitate investigations into financial crime. money laundering or fraud. >> mossack fanseca, it said our business is regulated by several different ove