At the same time, we are realistic about the differences that still divide us from Russia and about the time and effort it will take to build an enduring strategic partnership. Lingering distrust of our motives and policies by key Russian elites slows improvement in our relations. Russia's uneven commitment to the basic values of free-market democracy and dubious record in combating the proliferation of weapons of mass destruction remain matters of great concern. Russia's very weakness limits the opportunities for cooperation. Nevertheless, those opportunities are vastly greater now than in recent years -- or even decades.