Our next president will likely face a Russia led by Prime Minister Vladimir Putin, determined to stand up to a West Russians believe played them for fools when they sought to be friends. We pushed NATO into Moscow's face, bringing six ex-Warsaw Pact nations and three ex-Soviet republics – Lithuania, Latvia and Estonia – into our Cold War alliance and plotted to bring in Ukraine and Georgia. We pulled out of the Anti-Ballistic Missile treaty over Moscow's objection, then announced plans to plant ABM radars in the Czech Republic and anti-missile missiles in Poland. Putin has now responded in kind,...