The U.S. government has been in direct contact with Russia to warn Moscow not to deploy a new nuclear-armed antisatellite weapon‚ which it said would violate the Outer Space Treaty and jeopardize U.S. national security interests‚ U.S. officials said. The outreach to Moscow is part of a diplomatic campaign that the Biden administration is mounting to head off the threat that also involves approaches to China‚ India‚ G-7 nations and other close allies that have interests in space and channels...