Ukrainian special forces released new video, claiming it shows troops engaged in fierce gunbattles inside Russia. Ukraine claims troops have seized over 480 square miles to build a buffer zone.

Belarus has deployed aircraft and air defense troops to its border with Ukraine, a day after President Alexander Lukashenko announced he would station almost a third of the country’s military along the frontier

Indian Prime Minister Narendra Modi will visit Ukraine this week and meet with President Volodymyr Zelenskyy

Ukraine attacked the last remaining bridge over a key Russian river, effectively cutting off supplies to what's thought to be hundreds more Russian troops, analysts and Russian military bloggers said.

The Ukrainian military demolished another bridge critically important for supplying Russian troops, the Air Force said Sunday.

The Ukrainian military demolished another bridge critically important for supplying Russian troops, the Air Force said Sunday.

Ukrainian forces blew up a second bridge inside Russia amid Ukraine’s surprise incursion that began nearly two weeks ago. ABC News' Patrick Reevell reports from Kyiv.

Ukraine continues its incursion in Russia’s Kursk region as Ukrainian officials report destroying a second bridge critical for supplying Russian troops.

The suprise assault into Russia is nearly two weeks old. Ukrainian forces have posted images of a bridge they claim to have blown up cutting off several villages.

Ukranian forces cross further into Russian territory as Russia closes in on a key Ukranian city.

An aide of President Volodymyr Zelenskyy says Ukraine won’t permanently occupy territory it’s taken. However, as Ukraine pushes deeper into Russian territory, it’s losing ground in its own country.

Military authorities in the eastern Ukrainian city of Pokrovsk have urged civilians to speed up their evacuation because the Russian army is quickly closing in on what has for months been one of Moscow’s key targets

Ukranian military officials say that they are setting up an administrative office in the Kursk region of Russia to “maintain law and order” in the area.

As the vast use of drones has become a feature of the Ukrainian-Russian war, soldiers said they have found a new way to keep precious vehicles protected on battlefields.

The country's security service released a video showing what it says is the capture of more than 100 Russian soldiers. President Zelenskyy also said that Ukraine took control of the town Sudzha.

Ukraine now controls over 80 Russian settlements, including the town of Sudzha, since launching its incursion into the Kursk region last week, Ukrainian officials said.

Ukrainian President Volodymyr Zelenskyy says his country’s troops have taken full control of Sudzha

More than 200,000 Russian civilians have been ordered to evacuate their homes. Russia promises an "all-out offensive" in retaliation as thousands of Ukrainian troops cross the border.

The overnight strikes marked the biggest combined attack on Russia's air force infrastructure since the start of the full-scale war, Ukrainian sources said.

Russian forces have vowed an “all-out offensive” as Ukrainian forces continue to advance, consolidate and maintain control over towns they have seized.

Overnight, the governor of the border region of Belgorod called the situation “very difficult” following attacks by Ukrainian forces.

Russia’s Defense Ministry and pro-Kremlin military bloggers reported Tuesday that Ukrainian forces again launched multiple attempts to break through defensive lines.

General Robert Abrams joins ABC News to talk the significance of Ukrainian forces occupying Russian territory.

Retired U.S. Gen. Robert Abrams breaks down Ukraine’s push into Russia and how it might help with potential negotiations.

ABC News’ Ian Pannell reports after President Volodymyr Zelenskyy confirmed a military offensive is underway 18 miles inside of Russia.

Ukraine’s top military commander says his forces now control 1,000 square kilometers, or 386 square miles, of Russia’s neighboring Kursk region

Russian President Vladimir Putin is rushing troops to counter the largest occupation of Russian territory since World War II.

Ukrainian troops have captured 28 settlements in Russia's Kursk region, as thousands of residents have been ordered to evacuate, Russian officials said.

The Ukrainian military was progressing in its campaign "to push the war out into the aggressor's territory," President Zelenskyy said late Saturday in his daily address.

President Volodymyr Zelenskyy says the push into Russia is to put "pressure on the aggressor." The Kremlin says dozens of Russians have been wounded in the past several days.

Ukrainian President Volodymyr Zelenskyy has indirectly acknowledged ongoing military actions in Russia's Kursk border region to “push the war out into the aggressor’s territory.”

ABC's Patrick Reevell reports on President Volodymyr Zelenskyy commenting for the first time on the incursion, praising Ukraine’s army.

Russia has announced increased security measures in the border region of Kursk

A Ukrainian adviser to the head of President Volodymyr Zelenskyy’s office, Mykhailo Podolyak, on Thursday said one goal was to alter Russia’s perception of the war.

The operation this week represented Ukraine's largest incursion into Russia since the start of the war. Former U.S. ambassador to Ukraine Bill Taylor gives his analysis.

The death toll continued to rise after Ukrainian officials reported Friday that a Russian plane-launched missile struck a shopping mall in the town of Kostiantynivka.

After nearly two and a half years, Ukraine surprised many by taking the battle inside the Russian border region of Kursk.

ABC News’ James Longman has the latest as Ukraine continues its incursion into Russia’s Kursk region.

Ukraine has launched a major attack with Ukrainian troops into Russia, in what appears to be the most serious incursion into the country since Moscow's invasion began.

The regular Ukrainian military has launched a large-scale assault inside Russia for the first time since the Russian invasion of Ukraine.

In the largest incursion since the start of the war more than two years ago, Ukraine has taken control of a number of villages in the border area of Russia’s Kursk region.

ABC News’ Patrick Reevell reports on the ground in Ukraine where there is dwindling manpower on the frontlines two and a half years since the start of Russia’s full-scale invasion.

Since 2022, Ukraine has barred most military-age men from leaving the country. As a result, the number seeking to cross the border illegally has soared

Patients and doctors from Okhmatdyt children's hospital in Kyiv, Ukraine, describe the horror they felt during a Russian strike on the facility on July 8, 2024.

Solomiya Fomeniuk, 16, recalls the missile strike on the Okhmatdyt pediatric hospital as both horror and a miraculous survival.

Zelenskyy reached out to Trump, according to a source close to the Ukrainian leader and Trump, who said the two had a "very good phone call."

“I do not think that it is in America's interest to continue to fund an effectively never-ending war in Ukraine,” Vance said. "We’ve done more than our fair share.”

President Joe Biden accidentally called Ukrainian President Volodymyr Zelenskyy by the name of his rival, President Vladimir Putin, when introducing him at the NATO summit.

NATO members had included the accusations against China as part of a wide-ranging declaration.

More than 400 people were busy overnight on rescue operations at the Kyiv children’s hospital and elsewhere, Ukrainian President Zelenskyy said on Tuesday.