Ukraine is having some success in halting Russia’s new push along the northeast front weeks after the decision allowing the country to use U.S.-supplied weapons for limited strikes in Russian territory

Ukraine's president says at least three people have died in a Russian bombing attack on the second city of Kharkiv

Two years after Ukraine pushed back Russian forces, Kharkiv is facing a barrage of attacks.

Ukraine is experiencing rolling blackouts as Russia intensified strikes targeting energy infrastructure over the past three months

Putin's visit to Vietnam is widely seen as aimed at sending a signal that Russia still has friends in the region.

Russia is intensifying its use of cheap glide bombs to lay waste to cities in eastern Ukraine

NATO member Romania’s top defense body says the country will donate a Patriot missile system to neighboring Ukraine to help Kyiv in its war against Russia as Moscow’s forces continue to bombard civilian areas and energy infrastructure

A senior prosecutor in Ukraine says authorities have created a national registry to document cases of sexual violence allegedly committed by Russian forces

Ukraine is claiming responsibility for an overnight drone attack on a Russian oil facility that started a massive blaze in the latest long-range strike by Kyiv’s forces on a border region

Russia and Ukraine are set to remain locked in battle for the foreseeable future after an international gathering billed as a first step toward peace delivered no eye-catching diplomatic breakthrough that might suggest a coming end to Europe’s biggest ...

Nearly 80 countries have jointly called for the “territorial integrity” of Ukraine to be the basis for any peace agreement to end Russia’s two-year war

Several hundred LGBTQ Ukrainian servicemen and their supporters have marched in central Kyiv to demand more rights and highlight their service to their country in its war with Russia

Meeting in Switzerland, Vice President Kamala Harris met with President Zelenskyy and announced another $1.5 billion in aid to Ukraine.

Vice President Harris announced another $1.5 billion from USAID for Ukrainian infrastructure and humanitarian needs.

Dozens of world leaders have converged on a Swiss resort to discuss how to bring peace to war-ravaged Ukraine, though any hopes of a real breakthrough are muted by the absence of Russia

Col. Oleh Avtomeenko was wounded while performing a combat mission in Donetsk region, on the first days of the Russian full-scale invasion in late February 2022.

President Joe Biden and key allies have agreed to use interest from frozen Russian assets to back a $50 billion loan for Ukraine's war efforts and economic reconstruction.

Ukrainian President Volodymyr Zelenskyy spoke at the G7 summit in Italy with U.S. President Joe Biden to announce a bilateral security agreement to strengthen defense against Russia.

President Joe Biden and Ukraine’s president, Volodymyr Zelenskyy, signed a security agreement to bolster Ukraine’s defenses for 10 years.

NATO defense ministers have approved a plan to provide reliable long-term security aid and military training for Ukraine

President Joe Biden and Ukrainian President Volodymyr Zelenskyy held a press conference Thursday on the sidelines of the G7 summit in Italy.

In a round robin, ABC News correspondents Selena Wang, Mick Mulroy, and Patrick Reevell discuss the impacts of this historical agreement.

A group of Ukrainian winemakers has visited California’s Napa Valley to learn about organic farming and how to heal land scarred by bombs and littered with mines

ABC News senior White House correspondent Selina Wang is in Bari, Italy, with the latest on the G7 summit.

The money would come from interest accrued on some $300 billion.

"We'll be sending Russia a signal of our resolve," an official said.

The agreement will help Ukraine develop military capacity and production, sources said.

Russian forces have launched new deadly attacks on Ukraine, killing at least nine people a day before a high-profile meeting where leaders of countries that are some of Ukraine’s biggest backers are to discuss how to slow Moscow’s offensive

The summit starts Thursday in Italy.

Ukraine on Tuesday launched its Unmanned Systems Forces, a new branch of its military focused on drone warfare that officials said was the first of its kind.

Ukrainian President Volodymyr Zelenskyy has appealed for short-term help in repairing his country’s electricity network and long-term investment in its energy system

The United States has lifted a ban on providing American weapons and training to a controversial Ukrainian military unit that was key to the defense of the major port city of Mariupol

The United States and Poland have launched an international operation based in the Polish capital whose mission is to help Ukraine counter Russian disinformation

Switzerland’s president says nearly 90 countries and organizations, half from Europe, have confirmed attending the Swiss-hosted Ukraine peace summit over the weekend

A senior Ukrainian military officer says that the country's air force may keep some of the F-16 fighter jets it’s set to receive from its Western allies at foreign bases to protect them from Russian strikes

Ukraine says its forces have hit an ultra-modern Russian warplane stationed on an air base nearly 370 miles from the front lines

Ukraine needs more from Biden than weapons to defeat Russia, according to experts.

President Biden tells David Muir U.S. weapons will not be used to strike Moscow or the Kremlin in response to Putin’s statement about authorization of American weapons inside Russia.

The Pentagon says that the U.S. Defense secretary reiterated the U.S.'s unwavering support for Ukraine during a security summit in Singapore.

President Joe Biden has given Ukraine permission to strike inside Russia near the area of Kharkiv using American-provided weapons, a U.S. official confirmed to ABC News.

President Joe Biden has given Ukrainian forces permission to strike inside Russia with American weapons. This only applies to the border region near Kharkiv, and not for long-range strikes.

President Biden gave the green light for Ukraine to launch American-supplied weapons into Russia, with President Vladimir Putin calling the move an escalation.

President Joe Biden has authorized Ukraine to utilize U.S.-provided munitions against military targets in only a limited area of Russia to avoid sparking a wider conflict with the West.

The large shopping complex in Ukraine’s second-largest city may have had up to 200 people inside at the time of the strike.

ABC News sat down with Col. Oleksandr Bakulin, commander of Ukraine’s 57th brigade, in a rare interview as his unit battles a Russian offensive near Kharkiv.

Russia has made "tactical gains" in the Kharkiv region of Ukraine, a military expert told ABC News.

Six people were killed in the Russian attack. Plus, more villages are being evacuated.

ABC News’ Martha Raddatz interviews Victoria Nuland on “This Week.”

ABC News’ James Longman reports on the latest in Ukraine on “This Week.”

ABC News’ James Longman reports from Kharkiv, where the latest Russian offensive threatens Ukraine’s second-largest city.