Ukraine

This is the best summary I could come up with:

From the jamming of missiles to drones and artillery, the US is gaining valuable insights into its weaknesses in the brutal battlefields in east and south Ukraine.

Russia's jamming systems have created major issues with Western precision weaponry, including GMLRS rockets and Excalibur artillery shells, as previously reported by Business Insider.

Russia's electronic warfare units have become increasingly adept at scrambling the GPS navigation systems used to guide the missiles and shells to their targets, sending them off course and rendering them useless.

"The war has revealed that some of the US precision-guided munitions fail in a highly contested electromagnetic environment," Stacie Pettyjohn, a military analyst at the Center for a New American Security, told BI.

Maneuvering, concealing, and supplying troops on battlefields under constant drone surveillance is another conundrum Pentagon experts are grappling with, said Pettyjohn.

"The biggest problem that the Ukraine war has exposed with American weapons is that the Pentagon simply does not buy enough munitions for a large-scale protracted conflict," said Pettyjohn.

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