Arthur Herman: After COVID, the Afghanistan debacle, the wisdom of the Vikings can help an America in crisis

'The Viking Heart' is about the links between freedom and community, and how a polarized nation can become one again. It offer real lessons for today.

The Vikings’ willingness to venture into the unknown for the sake of community and family has universal value.

Twenty years after 9/11, Americans find are wondering what’s ahead after COVID and our debacle in Afghanistan.