Doug Lute, former NATO ambassador, said the latest U.S. military aid package could make a difference.

Lute was asked about the Biden administration's decision to spend another $800 million in military aid to Ukraine by Martha Raddatz on ABC's "This Week."

According to Lutte, the aid package will close the "quantitative gap" between the two sides.

According to him, many of the tanks the Ukrainians have now were abandoned or deserted by the Russians. The imbalance in quantitative factors such as tanks and artillery is beginning to shift to the Ukrainians' advantage."

U.S. President Biden announced that the U.S. would send another $800 million in military aid to Ukraine's forces fighting Russian troops in Donbas.

After abandoning an attempt to take over Kyiv earlier this month, Russian President Vladimir Putin is now looking for another way to take over Ukraine's other regions.

"Most NATO allies are offering deadly assistance," Smith added, "even some friends who have had a longstanding policy against doing so." "We've seen a significant shift in Europe, with several new allies emerging. We'd have to count up what's been given up to this point."

"What's essential here is that NATO countries are coming up and delivering the capabilities that Ukraine is seeking, and they're making a difference," Smith continued.

She also addressed a three-pronged proposal rejected by the Biden administration, in which Poland would deliver MiG-29 jets to Ukraine, and the US would subsequently replace Poland's inventory.

"If you're talking about Soviet-era jets, the answer is no," Smith continued. "The United States felt the precise idea put out by Poland is unworkable."

However, if a NATO ally decided to give those precise jets and tanks, "that is a sovereign decision." "They are authorized to make that decision," Smith said. "Right now, the US is focused on its air defense requirements, and we're delivering numerous capabilities to attempt to meet those objectives."