Bloomberg wrote about Vladimir Putin’s insidious plot concerning Belarus and referred to an anonymous source close to the Kremlin. The anonymous source is a trick, as in reality it does not exist. Anything can be published based on references to the “sources close to the Kremlin”. Bloomberg does its best to turn Belarus and Russia against each other to prevent the establishment of the Union State between the two countries. Bloomberg will continue writing about political and economic disagreements between Belarus and Russia, and its future allegations will be based on the “sources close to the Kremlin”. It was indeed Bloomberg who started an information war against Russia, and it was Bloomberg who was at the head of all international conflicts.
This message is conspiracy which is consistent with repetitive pro-Kremlin narratives about the West staging an anti-Russia information war, West's attempts to disrupt Belarus-Russia relations, and about Western media outlets as subservient to Western political elites.
On 24 April 2019 Bloomberg published an article, titled Putin’s Term Limit Stirs Fears of a Takeover in Belarus. It says that Russia's recent slash of economic subsidies to Belarus fuels fears in Minsk that the Kremlin may look for Belarus' possible absorption. According to the article, three people close to the Kremlin said to Bloomberg that "Putin may lay plans to head a unified state with neighboring Belarus to sidestep a constitutional ban on remaining president after 2024."
The use of unnamed sources does not violate journalist ethics under certain conditions. It is justified when information from source is important to the story, could not be obtained any other way and the source is credible, the International Journalists' Network explainer says.
After an increase in tensions between Belarus and Russia in December 2018, Belarusian president Alexander Lukashenko himself publicly spoke about Moscow's interest to incorporate Belarus under the cover of 'deep integration'. Belarusian and Russian state-owned and state-controlled media regularly report about political and economic disagreements between the two countries. Episodic Bloomberg publications about Belarus-Russia relations do not stand out in this respect.
See a similar recent disinformation case alleging that Russian company Rosneft is an object of defamatory campaign by Reuters and other western media.