Dick Lugar: “I think that's a source of greater transparency and accountability for how American money is going to be spent over the…”

In the likely event the INF Treaty collapses in August, the only remaining bilateral U.S.-Russia arms control agreement would be New START, which expires in 2021 but can be extended by up to five years through agreement by both parties.

That is a very dangerous attitude to take.

It seems to me to be really a safety net there.

The President has to want to get back into the discussions. At this point, there is not evidence that that is the case.