Meet the Swiss who laundered money for the Chavista oligarchy and is a key witness against Maduro’s children

Matthias Krull's information is essential for U.S. federal investigators trying to unravel the corrupt network that embezzled billions of dollars in oil money.

RIO DE JANEIRO, BRAZIL - Matthias Krull pulls up his pant leg, attaching a pair of pruning shears to the ankle device that has reminded him of his crimes for two years.

Armed with a court order, the former Swiss banker cuts through the hard plastic, which releases a torrent of emotion. "Physically I got used to it, but psychologically it's liberating," Krull, 47, said from his rented home in Miami. "Being able to wear shorts again is a big thing. I would go to my son's soccer games, it was 100 degrees (about 38 degrees Celsius) and everyone . . .

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