Russian military holed up in a school in Ukraine were blasted by a new missile supplied by the US, according to Ukrainian forces.
Footage shows the havoc wrought at the school which was being used as a command post by Vladimir Putin 's forces, it is claimed.
Ukraine believes at least 40 Russian military personnel were struck in the attack in Izyum, in the Kharkiv region.
Small fires surrounded the site where windows were smashed and debris covered the ground.
It is the first hit on Russian military command position by the weapon, which is precision guided with medium range.
The strike, on Izyum Lyceum No 2, involved the HIMARS High Mobility Artillery Rocket Systems which have a range of around 43 miles.
They were from the 20th Army of the Russian Armed Forces’ Western Military District, unit 89425, originally based in Voronezh.
"All personnel stationed at the command post were demilitarised - over 40 people," a spokesperson for Ukraine said.
Russia acknowledged the attack was by the US-supplied HIMARS.
The Kremlin claimed the strike had hit a hospital, and that the Ukrainian claim was intended “to appease a panicking Ukrainian army with illusory victories”.
However, Russian military vehicles seen outside the school suggest it was being used for military purposes by the invading army.
Earlier footage had been released showing what was claimed to be the first deployment of HIMARS by the Ukrainians.
Footage also emerged on Monday of the Russian defence minister Sergei Shoigu visiting frontlines in Ukraine for the first time.
Shoigu, 67, made his first visit to an undisclosed Ukrainian location to speak with troops in the war zone and seek to reassert control over the war in Ukraine.
Russia did not disclose the location but there is strong speculation he was in blitzkrieg Mariupol which his forces have captured from Ukraine.
Russian state TV boasted that Shoigu would be making future visits to major cities including Kyiv, Odesa and Mykolaiv once Russia’s invasion has seized Ukraine’s major cities.
The defence minister is an army general seen as a likely successor to Russian President Vladimir Putin and his visit was seen as a way to send an "I’m in control" message on his first war zone visit.
