The sidelining of the Abrams reflects evolving battlefield tactics where drone use has made it virtually impossible for them to maneuver without detection.
The U.S. has committed to send a 31 Abrams tanks to Ukraine, reversing course after Germany cleared the way for Europe to send scores of main battle tanks.
Defense leaders gathered at Ramstein Air Base in Germany to rally support for Ukraine could not reach an agreement on the provision of new Western tanks.