The U.S. has provided more than $75 billion in aid to Ukraine across humanitarian, financial and military support since of the country in February 2022, according to the Council on Foreign Relations.
Washington is by far the biggest backer of military assistance to Ukraine, . That compares with £4.6 billion ($5.81 billion) committed by the U.K. and approximately 5.6 billion euros ($6.06 billion) from the European Union, which approved the supply of lethal weapons to a third country for the first time in its history.
U.S military supplies to Ukraine drones, aircraft, ammunition and heavy artillery. Officials from the U.K. and U.S. at a NATO summit in July by suggesting Ukraine is failing to show "gratitude" for the provision of weaponry.
Ukraine in June launched its highly anticipated counteroffensive operation in Russia-occupied territories, but progress has been along a highly fortified 600-mile front line.
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Kyiv hopes U.S.-made and supplied weaponry, including and , could boost its progress.
"Somewhere, Ukrainian troops are able to advance faster and firmly reposition the Ukrainian flag over the Ukrainian territories. Some places are much more complicated, especially those where Russia has held the effective control for a longer time, and where their military units were able to quite literally dig themselves into the land territory of Ukraine," Vasylenko told CNBC.
"The way to expedite the counteroffensive and make sure that it is effective ... is to provide Ukraine with more weapons, more ammunition, more means to protect our skies and counter the aerial attacks that Russia is launching on a daily basis across all of Ukraine."
— CNBC's Amanda Macias contributed to this story
