Ukraine said Friday it had counted about 450 graves at a site near Izyum after retaking the strategic eastern city from the Russians, a discovery that compared Kyiv to atrocities at Bucha and Mariupol.

After retaking parts of the territory in a lightning counter-offensive in the east, Ukrainian authorities also said they had uncovered at least 10 “torture centers” in the Kharkiv region. Police Chief Igor Klymenko said two of the sites were found in north-eastern Balakliya.

Ukrainian officials said about 450 graves were counted at a single site near Izyum.

“This is just one of the mass graves discovered near Izyum. Rampant terror, violence, torture and mass murder have been rampant in the occupied territories for months,” said Senior Presidential Advisor Mykhaylo Podolyak.

The United Nations in Geneva said it wanted to send a team to investigate the circumstances of the death.

At a site near Izyum, AFP journalists saw graves crowned with crosses and marked with numbers, on which an inscription read: “Ukrainian army, 17 people. Izyum Mortuary.”

A regional police officer, Sergei Botvinov, told Sky News that bodies, including people killed by gunfire or shelling, were found at a burial site in Izyum.

Russia has been accused of carrying out attacks on civilians that amount to possible war crimes, particularly in cities outside the capital, Kyiv.

Dozens of civilians with evidence of extrajudicial killings have been found in places like Bucha outside Kyiv after being recaptured by Ukrainian forces earlier this year.

The grim discoveries coincided with new developments on the international front, including a White House announcement of a new package of up to $600 million in military aid to Ukraine.

Since Russia invaded Ukraine in February, the United States has provided Kyiv with more than $15 billion in military support, including long-range precision missile systems.

Chancellor Olaf Scholz warned that Europe would have to shoulder far more of the NATO burden as he described President Vladimir Putin’s Russia as the current “biggest threat” to the alliance.

“NATO remains responsible for the collective defense of the entire alliance with a focus on Europe. The core element remains credible deterrence,” said Scholz at a Bundeswehr congress.

Germany stands ready to take a leading role in ensuring Europe’s security, Scholz said, pledging to make the country’s armed forces the “best equipped” on the continent.

Devastated by two world wars, Germany has always performed lightly and quietly on the world stage when it comes to conflict and armaments.

European Commission chief Ursula von der Leyen visited Kyiv on Thursday to hold talks with Ukraine’s leaders on “bringing our economies and people closer together”.

“You will have your European friends by your side for as long as it takes,” von der Leyen said at a press conference with Zelenskyy.

Kyiv was granted candidate status for the European Union in June, angering Moscow, which has sought to retain political and military clout since the collapse of the Soviet Union three decades ago.

Many EU members have joined the US in supplying Kyiv with advanced weaponry that will allow its forces this month to drive the Russians out of thousands of square kilometers (miles) of territory.

EU countries have also imposed economic penalties on Russia.

Berlin took control of the German operations of Russian oil company Rosneft on Friday in a bid to secure energy supplies disrupted by the invasion.

Rosneft’s German subsidiaries, which account for about 12 percent of the country’s oil refining capacity, have been placed under the trusteeship of the Federal Network Agency, the economy ministry said.

The bouts come as Germany scrambles to rid itself of its reliance on Russian fossil fuels. Moscow has stopped natural gas supplies to Germany via the Nord Stream 1 pipeline.

Putin and Chinese leader Xi Jinping, meanwhile, called for a shaking of the world order as they met with Asian leaders for a summit to challenge Western influence.

At the Shanghai Cooperation Organization (SCO) meeting in former Soviet Uzbekistan, Putin welcomed what he called the growing influence of “new centers of power.”