Russian troops in Ukraine accidentally shot down one of their own aircrafts, spy chief says.

Russian troops in Ukraine are struggling with low morale and is refusing to follow orders, sabotaging their own equipment and even shooting down their own aircrafts, according to UK’s spy chief.

Britain’s spy agency Government Communications Headquarters (GCHQ) director Sir Jeremy Fleming, said in a speech on Thursday at the Australian National University that Russian soldiers are “refusing to carry out orders, sabotaging their own equipment, and even accidentally shooting down their own aircraft.”

Last week, Russian troops just outside Kyiv deliberately ran over their commander, Col. Yuri Medvedev with a tank after his 37th Motor Rifle Brigade suffered huge losses, according to the Washington Post. Western officials believe Medvedev is dead.

Fleming said that Vladimir Putin’s invasion of Ukraine is “failing” and that the Russian president “has massively misjudged the situation.”

“It’s clear he misjudged the resistance of the Ukrainian people. He underestimated the strength of the coalition his actions would galvanize. He underplayed the economic consequences of the sanctions regime. He over-estimated the abilities of his military to secure a rapid victory,” Fleming said.

On top of that, Fleming said Putin’s advisors are afraid to tell him the truth about “low morale, logistical failures, and high Russian casualty numbers.”

US intelligence officials have made similar claims about Putin being misinformed about the war in Ukraine because his advisors fear him.

Since the invasion began on Feb. 24, the U.S. estimates that around 7,000 Russian troops have been killed, though the real number could be higher. Russia claimed that number is closer to 1,300.

At least 1,119 civilians have been killed in Russia’s war, according to the United Nations.