Dick Lugar: “Will the international community join us in large measure, or will the United States again be the default lead donor in…”

The reasons for Russia's violation are unclear. But I believe the violation was likely due to a number of factors...

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

There is precedent for using patient diplomacy to resolve treaty violations.

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.