German officials said on Wednesday they plan to deliver 14 Leopard 2 tanks to Ukraine.

“This decision follows our well-known line of supporting Ukraine to the best of our ability,” Chancellor Olaf Scholz said in a statement. “We are acting in a closely coordinated manner internationally.”

Officials said the decision was the result of intensive consultations that took place with Germany's closest European and international partners. Other European allies also plan to send tanks, German officials said.

Ukrainian troops will be trained on the tanks in Germany, officials said in a statement. Germany also planned to send ammunition and provide system maintenance.

-ABC News' Joe Simonetti and Sarah Hucal

The Biden administration is leaning toward sending M1A1 Abrams tanks to Ukraine, U.S. officials have confirmed to ABC News.

The U.S. could commit to sending between 30 to 50 tanks to Ukraine under the Ukraine Security Assistance Initiative.

It could take more than a year for the new tanks to be fielded, officials said.

While President Joe Biden has not made a final decision, the transfer of Abrams would presumably enable Germany to authorize the transfer of German-made Leopard 2 tanks to Ukraine. This could then allow the 12 NATO countries that have Leopard 2 tanks to transfer them to Ukraine,.

The decision could be announced as early as this week, officials said.

-ABC News' Luis Martinez, Shannon K. Crawford and Matt Seyler

Ukrainian President Volodymyr Zelenskyy announced a new policy that forbids Ukrainian officials from leaving the country for non-governmental purposes.

"Officials will no longer be able to travel abroad for vacation or for any other non-governmental purpose," Zelesnkyy said in his evening address Monday. "Within five days, the Cabinet of Ministers is to develop a border-crossing procedure for officials so that only a real working trip can be the reason for border crossing."

-ABC News' Ellie Kaufman

The U.S. believes the number of Russians killed or injured fighting in Ukraine is well above 100,000, according to people familiar with the matter.

One source said the U.S. believes more than 150,000 Russians have been killed or wounded, and another source said the total number was approaching 200,000.

The chairman of the Joint Chiefs of Staff, Gen. Mark Milley, said Friday that the Russian casualty number was "significantly well over 100,000." In November, Milley had said that "well over" 100,000 Russians had been killed or wounded.

That number includes Russians who have been killed in action, have died from wounds, or who were wounded and have been taken off the battlefield. The number of injured is believed to be higher than the number killed, one source said.

ABC News’ Luis Martinez, Ben Gittleson and Matt Gutman

U.S. President Joe Biden made an unannounced visit to war-torn Ukraine on Monday, arriving in Kyiv as Washington signals its ongoing support ahead of the one-year anniversary of Russia's invasion.

Biden's visit came ahead of a planned meeting with NATO allies in Poland. He is expected to give a speech at the Royal Castle Arcades in Warsaw on Tuesday evening to offer an appraisal of international support during the first year of the war and to address "how we will continue to stand with the people of Ukraine for as long as it takes," White House spokesperson Karine Jean-Pierre said in a statement earlier this month.

Biden also plans to meet in Poland with leaders of the Bucharest Nine, a group of eastern NATO allies formed in 2015 in response to Russia's annexation of Ukraine's Crimean Peninsula.

Ukrainian President Volodymyr Zelenskyy made a dramatic visit to the United States in December, his first known international trip since the Russian invasion began in February 2022. Zelenskyy met with Biden at the White House in Washington, D.C., before addressing members of U.S. Congress on Capitol Hill.