The Ukrainian armed forces have received approximately 3,000 applications from the U.S. to join the fight against invading Russian troops, a Ukrainian Embassy official confirmed to ABC News.

Voice of America was first to report the news this weekend.

-ABC News’ Conor Finnegan

In a new letter to House Democrats, Speaker Nancy Pelosi reiterated plans to approve new aid for Ukraine in a government funding measure this week.

She also said new legislation to ban the import of Russian oil and energy products would repeal normal trade relations with Russia and Belarus and deny Russia access to the World Trade Organization.

The measure would also give the administration more power to raise tariffs on Russian imports.

Pelosi said Congress and the Biden administration “remain laser-focused on bringing down the higher energy costs for American families and our partners,” noting that 60 million barrels of oil have been released from strategic reserves and allies have said they will reduce their dependence on Russian energy.

“With the West’s carefully coordinated effort to sequence sanctions on Russia and mitigate for the costs of these efforts, we are standing up for our values abroad while protecting our families at home,” Pelosi wrote in the letter.

It’s not clear when the House will take up this measure, but Congress needs to approve government funding -- which will include the Ukraine aid -- by Friday.

-ABC News’ Ben Siegel

A planned Russian strike targeting military-industrial facilities will result in countless civilian casualties, Ukrainian President Volodymyr Zelenskyy warned in a new address.

He began his latest speech by saying that on a day recognized by Ukrainians as “Forgiveness Sunday,” there will be no forgiveness for Russia.

“We will not forgive shooting our people and destroying our infrastructure. Hundreds upon hundreds of victims, immeasurable suffering. God will not forgive this, not today, nor tomorrow, never,” Zelenskyy said.

The Russian Ministry of Defense announced on Sunday it will use high-precision weapons to destroy Ukrainian military-industrial facilities.

Zelenskyy warned those sites are in urban areas surrounded by civilian residences. “Hundreds of thousands of people live and work there,” he said. “This will be a premeditated murder, but today I haven’t heard any reaction from any world leader or any politician.”

He said Russia was openly announcing a “planned atrocity” in advance because there is no reaction from the international community.

“Well, I hope you’ll at least say something tomorrow when you’ll see it happened,” Zelenskyy said. “We know exactly how these attacks will be carried out, we know the full chain of command, we know everything, and we’ll forgive nothing.”

-ABC News’ Christine Theodorou

Approximately 600 Russian missile launches have taken place since the invasion of Ukraine began on Feb. 24, a senior defense official said.

They could not corroborate any reports of the use of cluster munitions or thermobaric weapons.

Ukrainian air and missile defenses are still effective and in use, the official said, though the airspace over Ukraine is contested.

Both sides have taken losses to aircraft and missile defense inventories, the defense official added, and while they did not reveal exact numbers, they believe both Russia and Ukraine still have a majority of their air defense systems.

The official also said Russian forces are still trying to advance across the north and east of Ukraine but are being met with strong Ukrainian resistance. The convoy is still stalled.

-ABC News’ Matthew Seyler

The U.S. Department of Commerce announced Friday that it will restrict the export of U.S. luxury goods to Russia and Belarus, as well as "certain Russian and Belarusian oligarchs and malign actors located worldwide," as a result of their actions in Ukraine.

The Department of Commerce said it will impose restrictions on the export, reexport and transfer of luxury items including certain spirits, tobacco products, clothing items, jewelry, vehicles and antique goods.

"Putin’s war of choice in Ukraine continues to take a devastating toll on innocent civilians in Ukraine, fueling one of the worst humanitarian crises Europe has seen in decades," Secretary of Commerce Gina Raimondo said in a statement.

Raimondo added, "Putin and the oligarchs who fund him have gotten rich off of Putin’s rampant corruption and the exploitation of the Russian people. We will not allow Putin and his cronies to continue living in opulence while causing tremendous suffering throughout Eastern Europe. Today’s action takes away another source of comfort and reminds them that Russia is increasingly isolated."

-ABC News' Luke Barr