Russia's annexation of the region has not been recognized internationally, including by the EU , the US , or China , and Ukraine has pledged to retake the Black Sea peninsula as part of its current military efforts.
The peninsula was taken before Russia's recent invasion of Ukraine, which began in February 2022.
Milanovic also criticized the flow of Western weapons going to Ukraine, according to The Associated Press , including the recent decision by Germany, the US, and other allies to send advanced tanks.
"I am against sending any lethal arms there," he said, addressing reporters during a visit to a military barracks. "It prolongs the war."
He added: "What is the goal? Disintegration of Russia, change of the government? There is also talk of tearing Russia apart. This is mad."
Milanovic's view that sending Ukraine arms will make the war last longer stands in contrast to the view of many Western officials, who say that giving Ukraine the weapons it needs is the best way to end the conflict as fast as possible.
Former UK Prime Minister Boris Johnson said in December that giving Ukraine better weaponry would help to end the war. "The Ukrainians have the valor necessary to succeed. They have shown it. They just need the equipment," he said.
In recent months Ukraine has pushed Russian forces back in the east, thwarting its efforts to conquer vast tracts of the country.
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