KYIV, Ukraine (AP) — Ukrainian drones on Thursday hit more Russian oil facilities and set two oil tankers ablaze in the Sea of Azov, a day after U.S. President Donald Trump pledged to grant Ukraine a license to manufacture the Patriot air defense systems.

Ukraine’s strikes on oil refineries and other infrastructure across Russia has triggered a widespread fuel crisis with gasoline shortages and fuel rationing reported in multiple regions and drivers waiting for hours to fill their tanks.