Russia-Ukraine live updates: Ukrainian special forces were in Russia during strike

At least two people were killed and others, including a toddler, were injured.

More than six months after Russian President Vladimir Putin launched an invasion into neighboring Ukraine, the two countries are engaged in a struggle for control of areas throughout eastern and southern Ukraine.

Ukrainian President Volodymyr Zelenskyy, whose forces began an offensive in August, has vowed to take back all Russian-occupied territory. But Putin in September announced a mobilization of reservists, which is expected to call up as many as 300,000 additional troops.

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President Volodymyr Zelenskyy named Time's 2022 'Person of the Year'

Time named Ukrainian President Volodymyr Zelenskyy and the Spirit of Ukraine as the 2022 "Person of the Year."

More than a dozen Ukrainians who embodied the spirit of Ukraine were also named: Dr. Iryna Kondratova, who helped mothers give birth during shelling in the hospital basement; Oleg Kutkov, an engineer who laid the groundwork for the essential connectivity; Olga Rudenko, editor-in-chief of the Kyiv Independent; and Levgen Klopotenko, a Kyiv chef who converted his restaurant into a relief canteen.

“This year’s choice was the most clear-cut in memory. Whether the battle for Ukraine fills one with hope or with fear, the world marched to Volodymyr Zelensky’s beat in 2022," Time Editor-in-Chief Edward Felsenthal said in a statement.

Ukrainian special forces were deep in Russia to guide drone, senior Ukrainian official says

Ukrainian special forces were deep inside Russian territory and helped guide drones to at least one of the bases hit in Monday’s attacks, a senior official from President Volodymyr Zelenskyy’s inner-circle confirmed to ABC News.

-ABC News' Marcus Moore

White House does not have assessment on drone attacks inside Russia

The U.S. does not have an assessment on recent drone attacks deep inside Russia, which a person close to Ukrainian President Volodymyr Zelenskyy told ABC News Ukraine is responsible for, White House press secretary Karine Jean-Pierre told reporters Tuesday.

"I don't want to speculate about whether Ukraine is responsible for these attacks," Jean-Pierre said.

Jean-Pierre also told reporters Russia is to blame for this conflict.

-ABC News' Ben Gittleson

Russia now out of Iranian-made drones, Western officials say

According to Western officials, Russia has run out of Iranian-made drones. Russia had been using the lethal drones, along with missiles, in a wave of aerial bombardments on Ukrainian infrastructure over a period of several weeks.

But, the drones have been absent in recent Russian attacks. A western official said the Russians "anticipate a resupply."

In light of Ukraine’s apparent drone attacks on military airbases deep inside Russia, Western officials said Russia will now be undergoing "a significant amount of soul-searching" over their ability to defend significant military assets deep inside Russia’s borders.

The official, who characterized the attacks as "an egregious failure of security" said the Russian military’s potential had been consistently overestimated by the west.

“I no longer think the Russians are ten-feet tall," the official said.

-ABC News' Tom Soufi Burridge