After four days of Russia invading his nation, Ukraine President Volodymyr Zelenskyy says he's growing frustrated with an apparent lack of international action — so he’s seeking his own team of supporters, he announced.

Zelenskyy hopes to draw volunteers who will "defend Ukraine and world order as part of the International Legion of Territorial Defense of Ukraine," Ukraine Foreign Minister Dmytro Kuleba.

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Those interested in helping should seek their own countries' respective diplomatic offices, he encouraged.

Ukraine President Zelenskyy

Ukrainian President Volodymyr Zelenskyy speaks to reporters, Feb. 14, 2022. (Getty Images)

"Together we defeated Hitler, and we will defeat Putin, too," Kuleba added.

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The U.S. and its NATO allies have announced economic sanctions against several major Russian entities and have supplied Ukraine with material support, but have not sent troops onto the ground to assist in physical fighting. 

Ukrainian military soldiers

Ukrainian President Volodymyr Zelenskyy, center, visits the front line in Donetsk region, eastern Ukraine, Thursday, Feb. 17, 2022.  (Ukrainian Presidential Press Office via AP)