The Guardian reported today that an investigative team from the United Nations documented numerous war crimes committed by Russian forces in Ukraine. Putin announced that he is calling one million men to active duty, and thousands of men are attempting to flee Russia before they are forced into combat. (It is illegal in Russia to call the invasion of Ukraine a “war.”) Protests have erupted in Russian cities, and more than 1,000 protestors have been arrested. Russia is conducting sham referenda in conquered Ukrainian territories, which will enable them to treat their conquests as Russian soil. Putin has said that any attack on Russia will allow him to use nuclear weapons in defense. This is a dangerous moment, to say the least.

The United Nations has said its investigators have concluded that Russia committed war crimes in Ukraine, including bombings of civilian areas, numerous executions, torture and horrific sexual violence.

The UN has made the investigation of human rights violations in the war a priority and in May its top human rights body mandated a team of experts to begin work in the country.

Since then, UN investigators, have risked their lives to collect evidence of crimes perpetrated against civilians, including in areas still threatened by enemy forces or laid with mines.

The team of three independent experts on Friday presented their first oral update to the UN human rights council, after it launched initial investigations looking at the areas of Kyiv, Chernihiv, Kharkiv and Sumy regions, adding that it would broaden its inquiries.

Speaking a day before the seven-month anniversary of Russia’s invasion of its neighbour, Erik Mose, the head of the investigation team, told thecouncil that, based on the evidence gathered by the Commission of Inquiry on Ukraine, “it has concluded that war crimes have been committed in Ukraine”.

The team of investigators visited 27 towns and settlements, as well as graves and detention and torture centres; interviewed more than 150 victims and witnesses; and met with advocacy groups and government officials.

Mose said the team had been especially “struck by the large number of executions in the areas that we visited”, and the frequent “visible signs of executions on bodies, such as hands tied behind backs, gunshot wounds to the head, and slit throats”.

He added it was investigating such deaths in 16 towns and settlements, and had received credible allegations regarding many more cases that it would seek to document. The investigators had also received “consistent accounts of ill-treatment and torture, which were carried out during unlawful confinement”, the council was told.

In the settlements of Bucha, Hostomel and Borodianka, occupied for about a month by Russian troops, Ukrainian investigators found dozens of mass graves where the bodies of civilians, tortured and murdered, had been buried.

Since the Russians withdrew from the area, a group of young volunteers worked tirelessly to exhume the bodies and send them to forensic doctors who have been collecting evidence of crimes perpetrated by Russian troops.

Some of the victims had told the investigators they were transferred to Russia and held for weeks in prisons. Others had “disappeared” after such transfers. “Interlocutors described beatings, electric shocks and forced nudity, as well as other types of violations in such detention facilities,” Mose said.

Mose said the team had also “processed two incidents of ill-treatment against Russian Federation soldiers by Ukrainian forces”, adding that “while few in numbers, such cases continue to be the subject of our attention”.

He said investigators had also documented cases of sexual and gender-based violence, in some cases establishing that Russian soldiers were the perpetrators.

“There are examples of cases where relatives were forced to witness the crimes,” he said. “In the cases we have investigated, the age of victims of sexual and gendered-based violence ranged from four to 82 years.”

The commission had documented a wide range of crimes against children, Mose added, including children who were “raped, tortured, and unlawfully confined”.