The Americans, Andy Tai Ngoc Huynh and Alexander Drueke, are both from Alabama.
Russian President Vladimir Putin's "special military operation" into neighboring Ukraine began on Feb. 24, with Russian forces invading from Belarus, to the north, and Russia, to the east. Ukrainian troops have offered "stiff resistance," according to U.S. officials.
The Russian military has since launched a full-scale ground offensive in eastern Ukraine's disputed Donbas region, capturing the strategic port city of Mariupol and securing a coastal corridor to the Moscow-annexed Crimean Peninsula.
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A look at the two leaders at the center of the war in Ukraine and how they both rose to power, the difference in their leadership and what led to this moment in history.
The Russian Foreign Ministry on Saturday published a list of American citizens who are barred from entering the Russian Federation on a permanent basis.
Russia said the move was in retaliation for anti-Russian sanctions currently imposed by the U.S.
The list published on the ministry's website comprises 963 U.S. citizens, including President Joe Biden.
More than 40 countries will be represented at the second meeting of the Ukraine Contact Group, formed last month to coordinate international support for Ukraine, according to Pentagon press secretary John Kirby.
Monday's meeting "will allow us to continue to dip into a process to get Ukraine, or at least to make other nations available and knowledgeable about what Ukraine needs as the fight is ongoing," Kirby told reporters during a briefing Friday.
More than 40 nations attended the first meeting both virtually and in-person at Ramstein Air Base in Germany. New countries will attend the second, which will be strictly virtual, Kirby said.
"There are some countries that have shown an interest in participating that weren't in the first meeting," said Kirby, who called the first iteration "a true global community" of countries in NATO and beyond.
-ABC News' Matt Seyler
Russia's Ministry of Defense claimed Friday it has taken complete control of the Azovstal plant and Mariupol from the Ukrainian forces, expelling them from the port city.
The underground facilities of the plant, in which the Azov National Regiment militia were hiding, came under the complete control of Russian forces, the ministry claimed.
The commander of the Azov Regiment was reportedly taken out of the territory of the plant in an armored car, the ministry said.
Russia claims 2,439 Ukrainian servicemen have laid down their arms and surrendered since May 16.
-ABC News' Alexandra Faul
Gasum, Finland's natural gas company, announced Friday that it was informed its imports from Russia's Gazprom Export will be cut off on Saturday at 7 a.m. local time.
The move by Russia comes days after Finland submitted its application to join NATO.
“It is highly regrettable that natural gas supplies under our supply contract will now be halted. However, we have been carefully preparing for this situation and provided that there will be no disruptions in the gas transmission network, we will be able to supply all our customers with gas in the coming months,” Gasum CEO Mika Wiljanen said in a statement.
Gasum will supply natural gas to its customers from other sources though the Balticconnector pipeline, which connects Finland with Estonia, the company said in a statement.
Gasum said its gas-filling stations in the network area will continue in normal operation.
-ABC News' Alexandra Faul
