Sweden and Finland are both historically neutral countries. Though both are members of the European Union, they are decidedly not members of NATO

But that may soon change.

In the wake of Russia's invasion of Ukraine, Finland and Sweden have signaled a desire to join the US-lead western military alliance. 

On the line with me to explain the significance of Sweden and Finland joining NATO is Ivo Daalder, President of the Chicago Council on Global Affairs and former US Ambassador to NATO.

We kick off discussing Sweden and Finland's historic neutrality before having a longer conversation about the process of NATO membership and what impact adding these two countries to the alliance may have both militarily and diplomatically.