Ukraine currently has more operable military planes currently than it did two weeks ago,
Pentagon spokesperson John Kirby said Tuesday.

Ukraine has received additional aircraft, as well as parts to fix damaged planes, he told reporters during his latest briefing.

Kirby was reticent in providing any details on where the parts and planes came from but stressed that they did not come from the U.S.

"We certainly have helped with the trans-shipment of some additional spare parts that have helped with their aircraft needs, but we have not transported whole aircraft," he said.

-ABC News' Luis Martinez

In his latest national address, Ukrainian President Volodymyr Zelenskyy continued to call on allies for military aid in the fight against Russia in eastern Ukraine, as the situation in Mariupol remains "severe."

"If we had access to all the weapons we need, which our partners have and which are comparable to the weapons used by the Russian Federation, we would have already ended this war," he said. "We would have already restored peace and liberated our territory from the occupiers. Because the superiority of the Ukrainian military in tactics and wisdom is quite obvious."

Zelenskyy addressed Ukraine's partners directly, saying that "every day matters."

"Any delay in helping Ukraine gives the occupiers an opportunity to kill more Ukrainians," he said.

Zelenskyy said Russian fire has "increased significantly" in the direction of Kharkiv and in the Donbas and Dnipropetrovsk regions. The situation in Mariupol in particular is "as severe as possible," he said, while claiming that the Russian Army is blocking efforts to organize humanitarian corridors.

"The occupiers are trying to carry out deportation or even mobilization of the local residents who have fallen into their hands," the president said. "The fate of at least tens of thousands of Mariupol residents who were previously relocated to Russian-controlled territory is unknown."

-ABC News' Alexandra Faul

President Joe Biden, speaking at the New Hampshire Port Authority on Tuesday, sought to distance his administration from the rising prices and inflation U.S. consumers are facing -- once again pointing to the ongoing COVID-19 pandemic and Russian President Vladimir Putin as the main culprits.

"So, let's be absolutely clear about why we have such high prices now, there are two reasons. First was COVID," Biden said. "And the second big reason for the inflation is Vladimir Putin -- not a joke. Putin’s invasion of Ukraine has up driven gas and food prices all over the world."

Biden said the major breadbaskets for wheat in the world are Ukraine and Russia with the United States and Canada right behind.

"What we saw in the most recent inflation data last month, about 70% of the increase in inflation was a consequence of Putin’s price hike because of the impact on gas and energy prices," Biden said.

Biden said he is doing "everything" he can to lower prices and that savings are already starting to come through for consumers.

"I'm doing everything I can to bring down the price to address Putin's price hike. That's why I authorized the release of $1 million barrels per day for the next six months from our strategic petroleum reserve," Biden said.

Biden said he is calling on Congress to pass his "human infrastructure" bill that has long stalled on Capitol Hill over policy disputes and the price tag.

-ABC News' Mariam Khan

White House Press Secretary Jen Psaki told reporters Tuesday the Biden administration is still weighing additional sanctions against Russia that could be announced by the end of this week.

"I think that we're still ... doing considerations and running a process for additional sanctions, but there are some under consideration. Yes," Psaki told reporters aboard Air Force One.

Psaki also provided a readout of President Joe Biden's call with U.S. allies Tuesday morning, saying the video conference was an opportunity for the world leaders to continue discussing their ongoing efforts to support Ukraine as Russia continues to carry out its assault against the country.

"The leaders reiterated their commitment to continue providing security, economic and humanitarian assistance to Ukraine in its time of need," Psaki said.

"The leaders affirmed their solidarity with the Ukrainian people and condemned the humanitarian suffering caused by Russia's unprovoked and unjustified invasion," Psaki added. "They also discussed their respective diplomatic engagements and their coordinated efforts to continue to impose severe economic costs to hold Russia accountable."

Psaki also said that the United States will continue to provide Ukraine with more ammunition, military assistance and money.

-ABC News' Mariam Khan

Jalina Porter, the State Department's deputy spokesperson, is responding to the Russian attack at a Ukraine train station that killed at least 50, saying, "We can no longer be surprised by the Kremlin's repugnant disregard for human life."

Five children were among those killed when Russian rockets struck the station in Kramatorsk in Donetsk Oblast on Friday morning, according to Ukraine's state-owned railway company. At least 100 people were injured, according to Donetsk Oblast Gov. Pavlo Kyrylenko.

Russia has denied involvement in the attack, which occurred as "thousands" of civilians fleeing the Russian invasion were at the train station waiting to be taken to "safer regions of Ukraine," according to Kyrylenko.

"Civilians are killed when they stay in their homes, and they're killed when they try to leave," Porter said. "Actions like these demonstrate why Russia did not belong on the U.N. Human Rights Council, and they also reinforce the U.S. assessment that members of Russian forces are committing war crimes in Ukraine."

Porter declined to say if the department considers the train station attack a war crime, saying, "Assessing individual criminal liability in specific cases is the responsibility of courts, as well as other investigatory bodies. But as the secretary, Secretary [of State Antony] Blinken, has said, 'Those responsible for war crimes and other atrocities committed in Ukraine will be held to account.'"

-ABC News' Conor Finnegan