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.

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

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.”

In an exclusive interview with ABC News’ Martha Raddatz, Ukrainian President Volodymyr Zelenskyy reveals new details about the surprise drone attack on Russian military targets.

At least 11 Russian aircraft were destroyed, according to an analysis by experts.

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

Air defense has been activated in Kyiv amid reports of airstrikes targeting Chernihiv, a city in northern Ukraine, ABC News confirmed.

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 Russian barrage in Ukraine's second largest city targeted residential high-rises and destroyed a government building.

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.

Ukrainian officials say at least five people, including a 1-year-old child, his mother and grandmother, were killed in a Russian drone strike on a northern Ukrainian overnight

Trump spoke on the phone with Putin for more than an hour saying it was "not a conversation that will lead to immediate peace."

Trump said he and Putin discussed Ukraine's large-scale drone operation that targeted Russian military airfields on Sunday and "various other attacks."

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."

ABC News' Tom Soufi Burridge reports on Ukraine’s targeted drone strike in Russia that took out several bombers in the latest series of unusual warfare tactics.

America’s Pentagon chief will not be in attendance when more than 50 other defense leaders meet this week to coordinate military aid to Ukraine

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.

Ukrainian staged a daring drone strike just before a new round of peace talks.

In a daring military operation named 'Operation Spider Web, ' Ukraine taking out an estimated 30% of Russia's strategic bombers with drones launched from what look like shipping containers.

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.

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.

These drone attacks come as leaders from Russia and Ukraine are expected to return to the table for a second round of peace talks.

Ukrainian drones and missiles targeted four Russian military airfields across the country, destroying some of its nuclear-capable bomber fleet on the ground.

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

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.

As negotiations to end the war in Ukraine stall, the Trump administration is turning to the Middle East to fulfill the president’s vow to be a global peacemaker.

Hundreds of Ukrainian drones crossed into Russia overnight into Wednesday morning, dozens of which targeted Moscow.

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

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

Ukrainian President Zelenskyy will visit Berlin to meet with new German Chancellor Friedrich Merz

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.

Ukrainian intelligence and open-source data show Russian President Vladimir Putin does not "plan to end the war," Ukrainian President Volodymyr Zelenskyy said Monday.

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

Pres. Trump also marked Memorial Day by honoring the fallen at Arlington National Cemetery.

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.

Ukraine's air force said that Russia launched a total of 367 "air attack vehicles" at targets across the country.