Russia has made incursions near two towns key to army supply routes in eastern Ukraine, a Ukrainian military official said on Wednesday, as Moscow seeks a breakthrough in a summer offensive at a time of uncertainty over U.

The last few weeks have seen massive waves of drones and missiles launched against Ukraine by Russia — attacks that are increasing in intensity.

The Trump administration is halting the transfer of artillery rounds and air defenses to Ukraine, depriving the country of much-needed weapons as it endures stepped-up missile and drone attacks from Russia.