U.S. intelligence agencies have concluded that Russian President Vladimir Putin could attempt a limited attack against a NATO member within the next few years, according to a Wall Street Journal report published Thursday. Intelligence Assessment Signals ShiftThe updated assessment follows months of warnings from several European military leaders. Officials from the Department of Defense, the Office of the Director of National Intelligence and NATO declined to discuss classified intelligence assessments. NATO Says Alliance is PreparedNATO said it continues to prepare for a wide range of security scenarios. The result of the intelligence assessment follows as Russia's invasion of Ukraine has been ongoing with no apparent settlement in sight.