Sen. Mitch McConnell pressed Defense Secretary Pete Hegseth on "who is the aggressor" in the Russia-Ukraine war.

Two key figures in Russia’s beleaguered political opposition were targeted by Russian courts as Moscow continues its crackdown on dissent

ABC News’ Maggie Rulli reports on the Russian drone strikes and bombs, which killed at least three people in the northeastern Ukrainian city of Kharkiv overnight, regional officials there said.

ABC News’ Maggie Rulli reports on the latest strikes, which happened after Russia and Ukraine exchanged prisoners.

Even as it pursues its invasion of Ukraine, Russia is also expanding its military footprint in Africa

Ukraine releases new video showing the moment one of its drones dove into a military complex inside Russia.

The exchanged included wounded soldiers and those ages 25 and younger, according to Ukrainian President Volodymyr Zelenskyy.

A record number of drone and missile strikes were launched across Ukraine by Russia. Ukraine says the large majority of the strikes were shot down or intercepted. 

At least 10 Ukrainian drones were shot down on their approach to Moscow overnight into Sunday morning, according to the city's mayor.

Stunning new images of Russian planes in flames after a Ukrainian drone attack.  

Ben Jensen of the Center for Strategic and International Studies joins ABC News Live to discuss the ongoing war in Ukraine following a night of deadly Russian strikes.

At least seven people were killed and 41 others were injured in massive Russian strikes across Ukraine overnight, which targeted civilian and energy infrastructure.

Volodymyr Zelenskyy said the Russian truck drivers who transported what would become platforms for Ukraine's drone attack on Russian warplanes did so unwittingly.

ABC News' Martha Raddatz is in Kyiv where she's been speaking with Ukraine's president.

Martha Raddatz speaks one-on-one with Pres. Zelenskyy, who reveals how Ukraine's brazen drone attack was executed.

Ukrainian President Volodymyr Zelenskyy refuted President Donald Trump's characterization of the war between Russia and Ukraine.

In an exclusive interview with ABC News’ Martha Raddatz, Ukrainian President Volodymyr Zelenskyy responds to President Donald Trump comparing Russia and Ukraine to “two young people fighting.”

Former Deputy Assistant Secretary of Defense for the Middle East Mick Mulroy discusses the latest assault by the Russian military on Ukraine.

More than 400 drones and 40 missiles were launched from Russia, leaving several dead and many more injured.

The escalation of attacks between Ukraine and Russia comes as U.S.-brokered peace talks between the countries have failed to come to fruition.

The aftermath of a Ukrainian drone strike on Russian airspaces is shown in satellite imagery.

President Donald Trump said Russian President Vladimir Putin told him in a phone call on Wednesday that Putin will retaliate against Ukraine for its coordinated drone attack on Russian war planes.

President Donald Trump said he spoke to Russian President Putin on Wednesday, describing their call as "good" but "not a conversation that will lead to immediate Peace."

The Security Service of Ukraine (SBU) on Tuesday claimed to have conducted a new attack on Russia's Kerch Strait Bridge.

The Security Service of Ukraine on Tuesday claimed to have conducted a new attack on Russia's Kerch Strait Bridge.

Ukraine’s “Operation Spiderweb,” kept secret for well over a year, was highly coordinated as the Ukrainians managed to smuggle in an army of explosive-laden drones across Russia.

Senators are escalating calls for a severe Russia sanctions bill to advance.

Ukrainian and Russian delegations met again in Istanbul on Monday to take part in the next round of U.S.-brokered peace talks.

ABC News’ Marcus Moore and former Deputy Assistant Secretary of Defense for the Middle East Mick Mulroy discuss the latest round of U.S.-brokered peace talks.

Footage captured in real-time shows Ukraine’s surprise coordinated drone attack on some of Russia’s key airfields.

The Security Service of Ukraine conducted a large-scale operation targeting four Russian military airfields on Sunday, an SBU source confirmed.

The U.K. will build new nuclear-powered attack submarines and create an army ready to fight a war in Europe as part of a boost to military spending

Delegations from Russia and Ukraine are gathered in Turkey for their second round of direct peace talks in just over two weeks, although expectations were low for any significant progress on ending the 3-year-old war

The attack, which took more than a year to execute and was personally supervised by Ukrainian President Zelenskyy, allegedly destroyed more than 40 Russian planes.

Leaders from Russia and Ukraine could return to the table for a seconds round of peace talks.

A passenger train has derailed in western Russia after a bridge collapsed because of what local officials described as “illegal interference.”

The Ukrainian Air Force said Saturday morning that Russia had carried out 114 aerial attacks on Ukraine overnight with drones and missiles.

At least 10 people were killed and 33 others were injured across Ukraine as a result of Russia's attacks, according to regional and local authorities.

U.S. special envoy for Ukraine and Russia Keith Kellogg discusses the ongoing cease-fire negotiations between Ukraine and Russia.

Trump previously said his personal relationship with Putin would usher in peace for Ukraine. Now, he says Putin's gone "absolutely CRAZY!"

While taking questions in the Oval Office, President Donald Trump was asked if he believed Russians are being disrespectful and if he believed that Vladimir Putin actually wants to end the war.

Moscow's Sheremetyevo International Airport warned travelers of delays due to flight restrictions imposed during the latest drone attack.

Germany's Federal Prosecutor’s Office says three men have been charged with working for one of Russia’s intelligence agencies in a “particularly serious case.”

Ukrainian President Volodymyr Zelenskyy said that Russian forces "used the largest number of drones against our cities and communities since the beginning of the full-scale war."

President Volodymyr Zelenskyy again appealed to the U.S. to apply more pressure on Russian President Vladimir Putin in pursuit of peace talks to end Moscow's war.

President Volodymyr Zelenskyy again appealed to the U.S. to apply more pressure on Russian President Vladimir Putin in pursuit of peace talks to end Moscow's war.

Russia launched 900 drones in just three days, killing dozens of Ukrainians and injuring more than 100 people.

Russia and Ukraine continued long-range cross-border drone attacks on Sunday night into Monday morning.

President Zelenskyy denounces what he calls U.S. silence as Russia launches a large-scale assault on Ukraine with drones and missiles.

Russian drones and missiles again bombarded cities across Ukraine on Saturday night into Sunday morning despite the completion of a major prisoner exchange.