I Wonder What He Means by "Neutralize"

Russian Deputy Foreign Minister Sergei Kislyak:

“If we see the development of systems that could reduce our deterrent potential, our military will have to take steps to neutralize the threat,” Kislyak was quoted as saying at a briefing in Moscow.

He did not specify the steps that would be taken, saying, “This will be decided by military specialists.”

“We would prefer not to have to do this,” he added.

I would assume, if he’s serious and not simply engaged in bluster, that this means refurbishing the Soviet missile force, perhaps rebuilding the MRBM force, and developing weapons intended to target the missile defense sites themselves.