that he wanted to negotiate another round of arms cuts with Russia, cutting each side’s stock of deployed strategic warheads by another third beyond the New Start treaty signed in his first term. The administration hoped to advance that initiative at the meeting in Moscow by framing future discussions over reductions.        </p><p itemprop="articleBody">
But Mr. Putin has publicly linked further reductions to a range of other strategic issues, including American plans to build a missile defense system in