Ukraine has intensified its retaliatory attacks on Russian infrastructure, including a drone strike that triggered a fire at Russia's Baltic port of Ust-Luga. The strike was part of Ukraine's efforts to cut revenues funding Russia's offensive.

A drone strike claimed by Ukraine triggered a fire at Russia’s Baltic port of Ust-Luga as the regional governor on Sunday reported new damage at the major exporting hub hit for a second time in days. Ukraine has intensified retaliatory attacks on Russian infrastructure – including refineries, oil depots and ports – saying they are justified as part of the effort to cut revenues funding Russia’s offensive. “There is damage to the port of Ust-Luga. There were no casualties,” Russian regional...