General Jack Keane, retired 4 star general, former Vice Chief of Staff of the US Army, the chairman of the Institute for the Study of War and Fox News Senior Strategic Analyst, joined Fox News Radio's Marie Harf to discuss foreign policy. 

On President Trump's feud with French President Macron: It's probably short-lived, just as the romance was kind of short-lived too. What I think is going on is that the European leaders have never really adjusted to the fact that the President of the United States, obviously the most important global leader in the world, publicly criticizes them and he can do it somewhat routinely. I don't think they've ever truly accepted something like that. (1:15)

On if European leaders understand how Trump communicates: It's not so much themselves personally. You're a national leader, to get to that point you've usually developed some type of thick skin. I think it has more to do with how they look being wire-brushed by the President of the United States in the face of their own people. I think that's probably what bothers them. (5:10)

On North Korea: I think we're at a stalemate is kind of where I think we're at. Certainly, we got a general in principle agreement about denuclearization as a result of the Singapore Summit and some positive moves in terms of returning the hostages, returning the remains, reconnecting North Koreans and South Koreans separated by the war, at least for a visit. It's not a permanent re-connection.  They're planning to reconnect rail lines going into a future Olympic proposal together. Those are all positive things, but and I have a big but here because we have asked since the first meeting for an inventory of all their ballistic missiles and nuclear weapons sites, research sites, actual storage sites and everything that's a part of that program. We have yet to get it. (10:39)