Eurasia Group released its annual list of the top geopolitical risks this week and, just like last year, the United States ranks at the top of the list. Unlike last year, though, our concerns for the US extend far beyond the next calendar year.

Let’s start with a statement that in typical times would be utterly uncontroversial: there was a clear winner in last November's US presidential elections. That winner was Joe Biden. Yet nearly half of all Americans refuse to accept that Biden won the presidency legitimately.