Belarus joins Russia’s war on Ukraine.

Belarus joined the Russian invasion of Ukraine on Tuesday, with the country’s troops entering the Chernihiv region in northern Ukraine, Ukrainian authorities confirmed.

In a tweet posted on Tuesday morning, the Ukrainian parliament, the Verkhovna Rada, confirmed earlier reports that Belarusian troops were on Ukrainian soil.

“Belarusian troops have entered Chernihiv region. The information was confirmed to the public by Vitaliy Kyrylov, spokesman for the North Territorial Defense Forces. More details later,” the tweet said.

According to local reports, a Belarusian column of 33 units had entered the region, located north of Kyiv, with mobile communications cut.

The Belarusian rollout comes a couple days after authoritarian leader Alexander Lukashenko held a referendum on proposed changes to the constitution that would allow him consolidate control of the country and end Belarus’ status as a nuclear-free zone — opening the way for a possible deployment of Russian nuclear weapons in the country.

Unsurprisingly, Lukashenko’s side won the referendum, according to Russian news agencies, citing Belarus’ central elections commission that 65.16 percent of those who took part voted in favor.