Russia-Ukraine updates: US sanctions Russian military shipbuilder, diamond miner

For the first time since the invasion of Ukraine, Russia's combat capability has likely fallen below 90%, a senior U.S. defense official told reporters. The official said there are no tangible indications of reinforcements being brought in from elsewhere in the country.

"[This is] combat power that they assembled in Belarus and in the western part of their country prior to the invasion. It is not an assessment of all Russian military power," the official said.

The official said there are "indications" that Ukrainian resistance is trying to retake some territory seized by Russian troops, such as the town of Izyum.

"What we're starting to see are indications that they are now able and willing to take back territory that the Russians have taken," said the official. "Whether this is a part of some sort of larger operational plan, we can't say for sure."

In Mykolaiv, northeast of Odessa, the Russians have been forced to reposition themselves to the area south of the city because Ukrainian resistance was so strong north of the city, the official said.

The logistical and resupply issues continue to plague Russian troops with the official noting that Russia now has concerns about fueling its ships in the Black Sea. Frostbite has also become an issue for Russian troops who continue to be inadequately supplied.

Ukrainian forces have mounted a strong resistance inside of Mariupol against the "significant number" of Russian forces that have made their way into the city, according to the official.

“The Ukrainians are fighting very, very hard to keep Mariupol from falling,” said the official.

Russia has fired more than 1,100 missiles in Ukraine, according to the official.

-ABC News' Luis Martinez

Russia's Defense Ministry claimed its forces pursued the retreating Ukrainian units of the 54th separate mechanized brigade, and advanced 4 kilometers on Tuesday, approaching the settlement of Novomikhailovka.

Russian-backed Donetsk troops took control of the settlement of Verkhnetoretskoe and continues to attack units of the 25th Airborne Brigade of the Armed Forces of Ukraine, according to Russia's Defense Ministry.

Russia claims two tanks, five infantry fighting vehicles, three field artillery pieces and seven off-road vehicles were destroyed.

Russia also claimed it fired air and sea-based high-precision long-range weapons at Ukrainian military facilities. It claimed it destroyed depots of fuel, lubricants, rocket and artillery weapons and ammunition.

The country's defense ministry said its operational-tactical and army aviation hit 83 military facilities of Ukraine. Among them: four command posts, four anti-aircraft missile systems, three depots of rocket and artillery weapons and ammunition, as well as 68 places of military equipment accumulation.

Russia claimed air defense systems shot down 6 Ukrainian unmanned aerial vehicles in the air, including one Bayraktar TB-2 near the village of Merefa, Kharkiv region.

In total, since the beginning of the attack, 236 unmanned aerial vehicles, 185 anti-aircraft missile systems, 1,547 tanks and other armored combat vehicles, 154 multiple rocket launchers, 612 field artillery guns and mortars, as well as 1,343 units of special military vehicles have been destroyed, Russia claims.

Hungarian President-elect Katalin Novak visited the small town of Beregsurany on Tuesday. The town is a mile from the border with Ukraine.

Beregsurany, which has a population of about 600 people, has seen an influx in refugees fleeing Ukraine. Some days as many as 3,000 people pass through it.

The town has responded by setting up a local welcome center to facilitate registration, offering temporary beds until more permanent homes become available and providing counseling and care.

Novak is a member of Hungary’s far right, populist political party and closely works with Prime Minister Viktor Orban, known for his hardline stance on immigration and strict asylum policies.

Novak met with reporters after handing out pancakes to some of the refugees, a tradition started by a group of local women who make hundreds of pancakes daily for everyone coming over the border.

Novak said Hungarians are a welcoming people and want to help those who are fleeing violence and forced to leave their homes.

When pushed on why the politics are different for these refugees, compared to refugees from other countries like Syria, she said Hungary will always welcome people fleeing violence, but the country’s stance on mass migration remains the same.

She did not explain why certain people are considered "mass migration" and others are "seeking asylum."

-ABC News' Maggie Rulli

Russian chess grandmaster Sergey Karjakin was found guilty of breaching an article in the FIDE Code of Ethics relating to public statements he has made in support of Russia's invasion of Ukraine.

Three days after the invasion, Karjakin published an open letter on his verified Instagram account expressing his support for the Russian regime.

"I express to you, our Commander-in-Chief, my full support in protecting the interests of Russia, our multinational Russian people, eliminating threats and establishing peace! I wish you a speedy fulfillment of all tasks assigned to our valiant army," he said in the post.

Karjakin has 21 days to appeal the decision.

-ABC News' Christine Theodorou