Russia-Ukraine updates: 2 US veterans who joined Ukrainian forces missing

First lady Jill Biden met with Ukrainian refugees on Saturday and was briefed on humanitarian efforts from United Nations agencies, nongovernmental organizations and the Romanian government during her trip to Romania.

Biden also visited a Romanian public school, Școala Gimnazială Uruguay, that is hosting Ukrainian refugee students, with Romanian first lady Carmen Iohannis.

Biden spoke with Ukrainian and Romanian educators and met with Ukrainian refugee students and Romanian students in classroom settings.

Biden met with Ukrainian and Romanian children who were making “hands” out of pieces of paper decorated as the Ukrainian and Romanian flags. Some of the children wrote messages on the hands.

Madalina Turza, the senior coordinator of humanitarian assistance for Romania told Biden they are working with the country’s Association of Psychologist to train educators in trauma-informed teaching. She also noted that they are working to make sure that all students are integrated and not segregated from Romanian children, saying that while the refugees may want to stick together at the moment, in time they will need to be with Romanian kids.

Biden also participated in a listening session with Ukrainian educators and mothers.

One mother explained that she escaped Kharkiv with her 8-year-old daughter just two weeks ago and narrowly avoided death when she chose to take one route out of the city over another that was shelled that day. She had been hiding in a basement with her daughter for over a week when they decided to flee.

-ABC News' Allie Pecorin and Armando Garcia

Italy's Ministry of Economy and Finance on Saturday impounded the Scheherazade, a yacht said to be worth $700 million, which allegedly belonged to Russian President Vladimir Putin.

The superyacht has been under investigation for months for possible connections to Putin and other Russians sanctioned by the EU. The Scheherazade was being refurbished in the Tuscan port of Marina di Cararra.

The investigation conducted by Italian authorities found significant economic and business connections between the owner of the Scheherazade and prominent people in the Russian government and other Russians sanctioned by the EU.

Italian officials also recommended to the EU Council that the owner of the boat be added to the list of Russians sanctioned for the war in Ukraine.

The war in Ukraine is taking a toll on Russia's military, the U.K. Ministry of Defense said Saturday.

"The conflict in Ukraine is taking a heavy toll on some of Russia’s most capable units and most advanced capabilities. It will take considerable time and expense for Russia to reconstitute its armed forces following this conflict," the ministry said in a statement.

Adding, "It will be particularly challenging to replace modernized and advanced equipment due to sanctions restricting Russia’s access to critical microelectronic components."

At least one T-90M, Russia's newest tank, with its strongest armor, has been destroyed in the fighting, the Ministry of Defense said.

The Russian military has approximately 100 T-90M tanks currently in service, including those in Ukraine, but the system's upgraded armor "remains vulnerable if unsupported by other elements," the defense ministry said.

First Lady Jill Biden kicked off the first day of her overseas trip by visiting Mihail Kogalniceanu Air Base in Romania, where she met with U.S. troops and NATO military leadership.

The U.S. deployed troops to the base, which is about 60 miles from the border with Ukraine, in the leadup to Russia's invasion of Ukraine.

Prior to departing the U.S. last night, the first lady told reporters, "It was so important to the president and to me that the Ukrainian people know that we stand with them."

Biden drew cheers Friday when she greeted soldiers with a bottle of ketchup in hand -- a commodity that has been in short supply on the base, according to her spokesperson.

Wearing a Beau Biden Foundation hat, the first lady helped serve mac and cheese and potatoes and shook hands and took photos with the service members. She also participated in a special story-time with United Through Reading, an organization that connects military families with a deployed service member through video recordings and virtual book readings.

Biden also met with members of the Delaware National Guard before departing the base for Bucharest.

-ABC News' Allison Pecorin and Molly Nagle