Ukraine’s challenges in massing troops, ammunition and equipment could cause its military to fall “well short” of Kyiv’s original goals for an anticipated counteroffensive aimed at retaking Russian-occupied areas this spring, according to U.S. intelligence assessments contained in a growing leak of classified documents revealing Washington’s misgivings about the state of the war. -snip- The document forecasting only modest success in Ukraine’s forthcoming counteroffensive indicates that Kyiv’s strategy revolves around reclaiming contested areas in the east while pushing south in a bid to sever Russia’s land bridge to Crimea, the peninsula Moscow illegally annexed in 2014 and now uses as...