Hacktivist group Anonymous has declared a "cyberwar" against Vladimir Putin's government following the Russian invasion of Ukraine.

The group is on a mission "for a better future for humanity." The Anonymous activists left a Twitter message and already took down the Russian-backed TV channel RT website, broadcast in Britain.

Though the website is back, the collective promised to go into cyberwar against Putin's administration.

The group also claimed responsibility for taking down Russian government websites, including the Kremlin and State Duma.

The group has over 6,5 million Twitter followers, and they aim to "punish" governments that go against their principles.

In Ukraine, at least 100,000 civilians fled their homes. The Russian forces entered the capital, Kyiv, as Ukraine President Mr. Zelenskyy pleaded for international help. He also called the Russian president to go back to negotiations.

Thousands of people are hiding below Kyiv in subway stations as of February 24.

Volodymyr Zelenskyy also ordered all men between 18 and 60 not to leave the country in a full military mobilization.

The Ukrainian president confirmed that despite Putin's claims that the Russian army is only attacking military areas, the attacks claimed civilian lives and sites. Zelenskyy stated:

"They're killing people and turning peaceful cities into military targets.

"It's foul and will never be forgiven."

In a tweet from February 24, he wrote:

"As of today, our countries are on different sides of world history."

"Russia has embarked on a path of evil, but Ukraine is defending itself and won't give up its freedom."

His adviser Mykhailo Podolyak expressed:

"A full-scale war in Europe has begun… Russia is not only attacking Ukraine but the rules of normal life in the modern world."

Reports claim the US and UK are considering tackling offensive cyberattacks against the Russian government and critical infrastructure to disrupt its operations.