Tensions grow in Ukraine over Russia troop buildup

DONETSK, Ukraine (AP) — The steadily advancing Ukrainian army is setting its sights on the largest rebel-held city in eastern Ukraine, while Western officials on Wednesday warned that a Russian military buildup on Ukraine’s border could herald a major incursion to protect the separatists.

President Vladimir Putin has resisted mounting pressure from Russian nationalists to send the army in to back the mutiny in eastern Ukraine. Even though the U.S. and NATO would be unlikely to respond militarily, the West would be certain to impose major sanctions that would put the shaky Russian economy on its knees — and could quickly erode Putin’s power.