Massive fires erupted at key Russian energy facilities as Ukraine launched a large-scale drone attack, forcing airspace closures and canceling celebrations.

The strike targeted the VNIIR-Progress plant in Cheboksary, a key supplier of Kometa antennas used to shield Russian drones from Ukrainian electronic warfare systems.

Ukraine's military reportedly carried out drone attacks on various Russian regions overnight on June 12, striking multiple petrochemical plants as far as over 1,200 kilometers…