KYIV, June 7 - The U.S. military has begun training Ukrainian forces on the sophisticated multiple rocket launchers that the Biden administration agreed last week to provide, The Associated Press reported. The Pentagon said the training is going on at a base in Germany and elsewhere in Europe.

The High Mobility Artillery Rocket System, or HIMARS, is mounted on a truck and can carry a container with six rockets, which can travel about 45 miles (70 kilometers). Officials said it would take about three weeks of training before they could go to the battlefront.

In other developments, President Volodymyr Zelenskyy said Ukraine planned to publish a special “Book of Executioners” next week with information about war crimes committed by the Russian army.

“These are specific facts about specific people who are guilty of specific cruel crimes against Ukrainians,” he said. Those named would include not only people who carried out the crimes but their commanders, he said.

The war also brought a standoff Tuesday between the head of the U.N. nuclear watchdog agency and Ukrainian authorities over the biggest nuclear power plant in Europe.

The director of the International Atomic Energy Agency, Rafael Mariano Grossi, wants to visit the Zaporizhzhia plant to help maintain its safety after it was taken by Russian troops in March.

But Energoatom, the Ukrainian state company overseeing the country’s nuclear plants, said in a blunt statement that Grossi isn’t welcome. It said his planned tour is “yet another attempt to legitimize the occupier’s presence there.”

Amid fears of a global food crisis because of the war, the Kremlin said Ukraine needs to remove sea mines near its Black Sea port of Odesa to allow essential grain exports to resume from there. Ukrainian officials have expressed concern that removing the mines could enable Moscow’s forces to attack. (ap/ez)