fbi, along with police in around 20 countries, carried out the year-long investigation. >>> we are now less than a week away from the presidential elections in ukraine. they're scheduled for saturday. in the meantime, russian president vladimir putin has once again said he'll pull back troops from eastern ukrainian border areas. our matthew chance is in moscow. matthew, so what was putin's order as far as the troops, 30,000, 40,000 russian troops along the ukrainian border, on the russian side? >> right, 30,000 to 40,000 accord to nato estimates. the russians aren't confirming that. vladimir putin in a meeting with the russian national security committee saying he's giving the order to pull those troops back from the ukrainian border, where he says they're on a routine training exercise that's now come to an end. it sounds very convincing of course. if it's true, wolf, then it could be a major step towards deescalating the crisis in ukraine. the problem is of course this is the third time that vladimir putin, the russian president, has issued this order publicly. these troops to go back. so far, there's been no movement on them. saying it's seen no substantial movement of troops since this third o