Defense leaders of NATO and other countries are gathering at Ramstein Air Base in Germany to hammer out future military aid to Ukraine,

amid ongoing dissent over who will provide the modern battle tanks that Kyiv says are desperately needed to recapture territory from Russia.

German officials have conveyed their hesitancy to allow allies to give Leopard 2 tanks unless the US also sends Ukraine the Abrams, a US official told The Associated Press on condition of anonymity.

The US has so far declined to provide M1 Abrams tanks, citing the extensive and complex maintenance and logistical challenges with the high-tech vehicle.

Berlin has veto power over any decision to export the tanks and Chancellor Olaf Scholz’s government has appeared reluctant so far to authorise that for fear of provoking Russia.