Dick Lugar: “I can assure you, if we had not had any hearings, ... that it wouldn't have been defeated.”

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.

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

There is really a desire for something to be out there.

Diplomacy is not a luxury. It is essential to American national security, especially in an era of terrorism.