Western intelligence officials are increasingly convinced that the Russian president wants to take control of a larger swath of territory. American intelligence officials are warning allies that there is a short window of time to prevent Russia from taking military action in Ukraine, pushing European countries to work with the …

The U.S. has shared intelligence including maps with European allies that shows a buildup of Russian troops and artillery to prepare for a rapid, large-scale push into Ukraine from multiple locations if President Vladimir Putin decided to invade, according to people familiar with the conversations. That intelligence has been conveyed …

Russia’s defense chief on Tuesday signed a roadmap for closer military ties with China, pointing to increasingly frequent U.S. strategic bomber flights near both countries’ borders. During a video call, Defense Minister Sergei Shoigu and his Chinese counterpart Wei Fenghe “expressed a shared interest in stepping up strategic military exercises …