Vitali and Wladimir Klitschko are defending their homeland.

The impact of the conflict continued to reach across the sports world.

Fedor Smolov, a Russian soccer star, posted a blacked-out picture on the social media site.

On the Ukrainian side, Hall of Fame boxers and brothers Vitali and Wladimir Klitschko said they plan to fight for Ukraine, and not like a charity boxing match to support loved ones who lost family members, but like fight fight, like take up arms, according to ESPN.

Vitali, the mayor of Kyiv, the capital of Ukraine, spoke about the decision on Good Morning Britain on Thursday.

I don't have another choice. I have to do that. I would fight.

Wladimir enlisted in the reserve army earlier this month and made a statement on Thursday.

The Russian president is making it clear that he wants to destroy the Ukrainian state and its people. Words are followed by missiles and tanks. Death and destruction come upon us. We will fight for freedom and democracy.

Oleksandr Usyk, a Ukrainian boxer, returned home after a meeting in London about a video game.

Some people wrote to Usyk that he ran away, but he was back at work. All of us have to stop this war.

Wow. Thanks to those guys.