The nuclear weapon treaties that have helped preserve peace for nearly half a century have begun to fray.
Stirring concern are recent Russian treaty violations, growing tensions between nuclear powers and the continuing ambitions of nations seeking their own strategic weapons.
The latest blow came with Russian President Vladimir Putin's announcement last month that he would add 40 new intercontinental nuclear missiles to his arsenal — not a treaty violation, but a powerful message about Russia's robust plans for its nuclear forces.
FOR THE RECORD:
Nuclear treaties: A July 9 article in Section A on arms control incorrectly...