03/27/2014 09:34 pm ET Updated Mar 27, 2014

Russian Buildup Stokes Worries

AFP via Getty Images

WASHINGTON—Russian troops amassing near Ukraine are actively concealing their positions and establishing supply lines that could be used in a prolonged deployment, ratcheting up concerns that Moscow is preparing for another major incursion and not conducting exercises as it claims, U.S. officials said.

Read more on The Wall Street Journal