NATO's Secretary-General Jens Stoltenberg announced that he invited Ukrainian President Volodymyr Zelenskyy to a NATO summit in Vilnius, Lithuania, on July 11 and 12.

Zelenskyy will meet with alliance member states, according to Stoltenberg.

-ABC News' William Gretsky

The U.S. is continuing to push for consular access for Evan Gershkovich, the Wall Street Journal reporter detained in Russia, White House press secretary Karine Jean-Pierre said during a briefing Tuesday, adding that "this is a priority" for President Joe Biden.

Asked how worrying it was the U.S. still didn't have consular access, Jean-Pierre said, "We're concerned."

"We're taking this very seriously," Jean-Pierre said, pointing to Secretary Antony Blinken’s conversation with Russian Foreign Minister Sergey Lavrov over the weekend. "We're working diligently, very hard to get a counselor to Evan.”

Jean-Pierre declined to say whether the U.S. was close to determining that Gershkovich was being "wrongfully detained" or provide a timeline of when that determination may happen, saying the State Department's process "is currently ongoing." That classification would allow the federal government to use more resources to try to free him.

-ABC News' Ben Gittleson

The Pentagon announced $2.6 billion in new security assistance for Ukraine on Tuesday.

The aid will come in two forms: a $500 million presidential drawdown authority package pulling from existing U.S. stockpiles (the 35th such package for Ukraine); and $2.1 billion from Ukraine Security Assistance Initiative funds to procure new equipment.

Both the PDA and USAI packages are largely focused on providing munitions for Ukraine, including additional Patriot air-defense missiles and HIMARS ammunition. They also include anti-drone weapons, vehicles, communications equipment, spare parts and more.

-ABC News' Matt Seyler

At least 501 children have been killed and almost 1,000 others injured since February 2022, Catherine Russell, executive director of UNICEF, tweeted Monday.

"Another tragic milestone for Ukraine's children and families," she wrote, adding: "This is just the UN verified number. The real figure is likely far higher, and the toll on families affected is unimaginable."

Ukrainian forces have killed 225 Russian fighters and injured another 306 in the past 24 hours in the Bakhmut area, according to Serhiy Cherevaty, the spokesman for the Eastern Group of Forces of the Ukraine army.

Russia and Ukraine have been locked in a brutal battle for the city in eastern Ukraine for months, with both sides seeing high rates of casualties.

Cherevaty said that in the last day, the occupiers in the area of Bakhmut and nearby villages -- including Orikhovo-Vasylivka, Bohdanivka and Ivanivskoho -- tried to attack Ukrainian positions 42 times. There were 24 combat clashes in the Bakhmut area alone.

In total, in the Bakhmut direction, the occupiers shelled Ukrainian positions 256 times with various types of artillery and multiple launch rocket systems, Cherevaty said. Of them, 53 shellings were in the area of Bakhmut itself.

-ABC News' Will Gretsky