Source :

The Biden administration has quietly given Ukraine permission to strike inside Russia — solely near the area of Kharkiv — using U.S.-provided weapons, two U.S. officials and two other people familiar with the move said Thursday, a major reversal that will help Ukraine to better defend its second-largest city.

Context:

Those messages came after top U.S. allies, such as the United Kingdom and France, said Ukraine should have the right to attack inside Russia using Western weapons.