Dick Lugar: “Let me thank the panel, because you have offered, I think, diverse views and that has been helpful.”

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.

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

Congress has the ability to press the administration on its strategy to prevent a new Euro-missile race and increased instability in the absence of the INF Treaty.

Several members of Congress have already proposed legislation along these lines.