Former Federal Reserve Chairman Ben Bernanke is getting busy in the public arena, after staying relatively quiet over the past few years.

He just started a new blog, and in a Washington speech Monday said that interest rates will ultimately rise around the world, as the economies of Europe and emerging markets rebound, CNBC reports.

"The downward pressure on global interest rates will probably moderate somewhat, continue to moderate somewhat over time, and the pressures for the trade deficit of the United States will probably moderate somewhat over time," Bernanke remarked.

Interest rates in the United States, Europe and Japan stand at or near record lows.

As for the trade gap, presumably Bernanke meant that when overseas interest rates finally rise, the dollar will slip from its lofty heights.

That would boost U.S. exports by making them less expensive in foreign currency terms and curb U.S. imports by making them more expensive in dollars. And that would shrink the trade deficit.

When it comes to Europe, it is now "in a depression basically," Bernanke noted. Growth totaled only 0.9 percent in the eurozone last year.

Pimco managing directors Andrew Bosomworth and Mike Amey aren't particularly bullish for the long-term of the eurozone and its single currency the euro.

"The lesson from history is that the status quo we have now is not a tenable structure," Bosomworth said, according to The Telegraph.

"There's no historical precedent that this sort of structure, which is centralized monetary policy, decentralized fiscal policy, can last over multiple decades," he added.

While the European Central Bank is in charge of monetary policy for the 19-nation group, each country conducts its own fiscal policy.

There's a political dynamic working against the eurozone, Bosomworth noted. "[Persistently low growth] manifests itself in a lack of support in the common currency, so then it leads to the rise to power of political parties that want to end it. That's what we seen in the last few years."

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