President Vladimir Putin said he'd sought an "open dialogue" with the West.
Almost a year after Russian President Vladimir Putin launched a full-scale invasion of neighboring Ukraine, the two countries are engaged in a struggle for control of areas throughout the east and south.
Putin's forces pulled out of key positions in November, retreating from Kherson as Ukrainian troops led a counteroffensive targeting the southern port city. Russian drones have continued bombarding civilian targets throughout Ukraine, knocking out critical power infrastructure as winter sets in.
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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
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
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
A Ukrainian drone crashed into a military airfield in Russia, setting an oil tanker on fire, according to the governor of Russia’s Kursk region.
There were no casualties at the Kursk base. This comes a day after drone attacks on two Russian airbases where jets used to bomb Ukraine are housed. No one immediately claimed responsibility.
-ABC News' Joe Simonetti
