Ukraine prompts fresh U.S. look at use of Russian rocket engines

WASHINGTON (Reuters) - The Pentagon is going to take a fresh look at U.S. reliance on Russian-built engines to power American rockets that launch large U.S. government satellites into orbit, in light of the Ukraine crisis, Defence Secretary Chuck Hagel told Congress on Thursday.

U.S. dependence on Russian engines has long been a concern of U.S. lawmakers, but those worries were heightened by mounting tensions between Washington and Moscow over Russia's seizure of Crimea, an autonomous region in Ukraine.