Richard Lugar actually said...

Energy security is a critical factor affecting nearly all of today's foreign policy challenges.

The recent provocative actions by North Korea that you've cited are moving that country toward even greater isolation.

Of course you want negotiation, but until we really do something as an international community, I don't see much movement in that respect.

In due course, we may get into some diplomacy because the North Koreans do find it necessary, but our job right now is the Security Council.