“The US has long placed its faith in expensive weapons as the key to victory in conflicts, but the Ukraine war is forcing it to revise its assumptions, The Washington Post has reported.
Stacie Pettyjohn, the director of the defense program at the Center for a New American Security, told the outlet the conflict had challenged long-held ideas that expensive, precision-guided weapons were key to winning US wars.
US-made Himars or Excalibur shells, which are guided to their targets using GPS, have proven vulnerable to Russian electronic-warfare units, which scramble their signals and send them off course.”
https://www.yahoo.com/news/ukraines-war-shown-us-expensive-113140807.html