Russia's jamming of US-provided rocket systems complicates Ukraine's war effort

Russia has been thwarting US-made mobile rocket systems in Ukraine more frequently in recent months, using electronic jammers to throw off its GPS guided targeting system to cause rockets to miss their targets, multiple people briefed on the matter told CNN.

source https://www.cnn.com/2023/05/05/politics/russia-jamming-himars-rockets-ukraine/index.html