[JimRed]

Sorry, I'm not sure what you're referring to.

"Since the treaty was launched, Russia has deployed 111 new nuclear warheads, bringing its total number of deployed warheads to 1,648. That treaty limit is 1,550 warheads - a number that must be reached in 2018."

To comply with the treaty by the specified date they'll retire the old stuff. The wouldn't retire it until it was replaced by upgraded new stuff.

[ETL]

Re: "Since the treaty was launched, Russia has deployed 111 new nuclear warheads, bringing its total number of deployed warheads to 1,648. That treaty limit is 1,550 warheads - a number that must be reached in 2018."

To comply with the treaty by the specified date they'll retire the old stuff. They wouldn't retire it until it was replaced by upgraded new stuff.

Why then has Obama cut our number of warheads by 250?
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From the article...

"At the same time, U.S. nuclear warheads, missiles, and bombers have fallen sharply and remain below the required levels under the New START pact.

The United States during the same period of the Russian increases cut its deployed nuclear arsenal by 250 warheads. ..."