Ukraine Crisis May Thwart Obama Plans From Iran to China

The Ukraine crisis jeopardizes President Barack Obama’s efforts to enlist Russia’s cooperation on a range of issues, including seeking an end to Syria’s civil war, halting Iran’s nuclear ambitions and facilitating the withdrawal of U.S. and allied forces from Afghanistan.

Obama’s handling of Ukraine may affect issues from the Israeli-Palestinian peace talks, North Korea’s nuclear weapons advances and China’s increasingly aggressive regional posture as the president's critics raise doubts about his toughness in addressing foreign challenges.