The use of the long-range missiles came as Russian President Vladimir Putin formally lowered the threshold for using nuclear weapons.
Foreign actors, like Russia and Iran, have been trying to convince American voters that the process is too corrupt to participate in, experts say.
Some North Korean soldiers heading toward Kursk have received Russian uniforms and equipment.
“What exactly they are doing? Left to be seen. These are things that we need to sort out,” Lloyd Austin was quoted as saying.
