Russian authorities say a truck bomb has caused a fire and the partial collapse of a bridge linking Russia-annexed Crimea with Russia.

There were no immediate reports of casualties.

The criticism marks the clearest indication yet of turmoil within Russia’s leadership over the stewardship of a war that has gone disastrously wrong for Moscow.

Ukrainian forces have retaken 154 square miles of territory, including 29 settlements, in the Kherson region since Oct. 1, Ukrainian officials reported Thursday.

In a defiant move, the Kremlin held the door open for further land grabs in Ukraine.

Russian troops abandoned a key Ukrainian city so rapidly that they left the bodies of their comrades in the streets.

In their latest breakthrough, Ukrainian forces penetrated Moscow’s defenses in the strategic southern Kherson region, one of the four areas in Ukraine that Russia is trying to grab and desperately defend.