In recent weeks, the “almighty dollar” has seen its value tumble compared to other major currencies like the euro. It’s happening at a time of uncertainty about the impact of the Trump administration’s tariffs, causing some to wonder about the future of the dollar as the world’s go-to reserve currency. The World’s Carolyn Beeler speaks to David Lubin, a senior research fellow at Chatham House, an international think tank based in London. He joined the show from Washington.