Kaylee Wells

But a lot has changed since then, including Kalmfors' opinion.

Because Sweden is a small country, about the size of Los Angeles County, but it's got a lot of big companies that do lots of business abroad.

Maybe you've heard of them.

Volvo, H&M, Ikea.

Anders Oshlund is a senior fellow at the foreign policy think tank Stockholm Free World Forum.

He says international business is a lot easier when it doesn't rely on a bunch of different currencies.

But currency isn't just an economic tool.

It's a political one, too.

Consider the last five years.

Russia invaded Ukraine.

The U.S.

started talking about taking Greenland from Denmark, plus all the tariffs.

So we've got big countries with big economies threatening small countries with small economies.

Kathleen McNamara teaches government at Georgetown University.

She says amid all this uncertainty, smaller states are feeling pressured to pick sides for protection.

Sweden might pick Europe because, yes, the U.S.

dollar has historically been the port in international economic storms.

But today?

Which creates an opening for Europeans and their euro to become political and economic leaders.

McNamara says she's waiting to see not just if Sweden adopts the euro, but if Denmark will follow suit.