This is a scary time, but BOE, ECB are ready: Ex-Citigroup exec

The world is changing rapidly, but central banks have the right leadership the get us through this, former Citigroup executive William Rhodes says.

"We're very lucky to have someone as experienced as Mark Carney as the governor of the Bank of England . He's the one who saw Canada through the Great Recession," Rhodes, currently president and CEO of Rhodes Global Advisors, told CNBC's " Squawk Box ."

"Also, we're fortunate to have Mario Draghi in there in the [ European Central Bank ]. We have two real pros there, and both of them have private-sector experience in addition to all their public-sector experience," he said.

The United Kingdom shocked the world last week when it voted to leave the European Union .

Some of the largest market turmoil was in currencies, which saw the British pound fall to a 30-year-low against the U.S. dollar.

"One of the positive things, if you want stability, is that [Spanish Prime Minister Mariano Rajoy ] actually came out better with the Partido Popular party in Spain as a reflection of what's going on in the U.K. I think people decided to back what they knew as against what they were not sure of with Podemos and the other parties," Rhodes said.

Spanish voters delivered a hung parliament for the second time in six months in Sunday's general election, with Rajoy's conservative People's Party emerging as the only major party to gain ground from inconclusive elections held last December, but it fell short of a majority.

— Reuters contributed to this report.

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