LONDON—Russia has launched a crash program to harden military airfields near the border with Ukraine in response to Kyiv’s successful strikes with one-way attack drones, the UK Defense Ministry has said. In its latest intelligence update published on July 29, UK defense officials posted satellite...

The attack, which came just hours after President Trump gave the Kremlin a new deadline to work toward ending the war, was part of a wave across the country, the authorities said.