Russia may cease deliveries of the RD-180 first stage rocket engine to the United States until the U.S. guarantees they will not be used in military launches, according to Russian media reports. Russian Deputy Prime Minister Dmitry Rogozin, who also heads the nation’s space efforts, made the statement Tuesday in a Twitter account under his name. Russia Today also cited Russia’s Interfax news agency reporting the news. The Defense Department uses the RD-180 in national security space launches. President Barack Obama…
