Chris Murphy actually said...

"But is article 5 still a sufficient protection for countries along Russia's border?"

"Aside from the significant defensive enhancement against any new 'Crimea,' this step would signal Moscow that the United States and NATO are going to defend alliance territory."

"we are more likely to gain his attention if we stop 'self-deterring' ourselves."

"I reject the notion that Russia was pushed into this by NATO's expansion east."