The BBC's weekly The Boss series profiles different business leaders from around the world. This week we speak to Rob Bernshteyn, chief executive of US software company Coupa.
When Rob Bernshteyn and his family finally managed to escape the Soviet Union, they initially found that the US was worse.
"We settled in a pretty tough neighbourhood of Brooklyn [New York, in 1980]," says Rob looking back. "You didn't want to be walking round at night unless you were carrying. I mean, this was a rough neighbourhood, very rough. New York was a different place back then.