International currency arrangements have come under scrutiny in the aftermath of the global financial crisis The dollar has been the preeminent global reserve currency for most of the past century.

The ruble has appreciated 38% against the US dollar, the most of any currency.

Currency shapes everything from daily transactions to global trade, yet most people rarely think about why we have different currencies in the first place. The idea of a world currency surfaces ...

Lebanon has the world’s weakest currency in 2025. Since 2019, Lebanon has been facing a severe financial crisis due to government mismanagement, corruption, and political instability.