Ulyanov has already deleted his tweet with a call not to spare the Ukrainians.

The permanent representative of the Russian Federation to international organizations in Vienna , Mikhail Ulyanov, wrote a post on Twitter urging not to spare the Ukrainian population.
He published his tweet in response to a post of gratitude from Ukrainian President Volodymyr Zelensky for a new military aid package that the United States allocated for Ukraine today. Later, Ulyanov deleted his post, but it remained in the web archive of the social network, and screenshots also remained on the network.

After Ulyanov wrote another post with an “apology”. “I have to apologize. I forgot who I’m dealing with. Of course, I meant the United States with their arms supplies and the President of Ukraine, who just yesterday said that he rejects any peace negotiations. Indeed, no mercy on their part for the Ukrainian population. That’s what I said,” Ulyanov said.
Recall that Amnesty International apologized for the scandalous report on Ukraine, but continued to defend it. In particular, the organization apologized for its report, in which it accused Ukraine of the military endangering civilians.
(C)UNIAN 2022

The rat told the truth, and this reflects the true mentality of the savages in the Kremlin.
Permanent Representative of the Russian Federation in Austria Mikhail Ulyanov declares the need for a “final solution of the Ukrainian issue” and calls for genocide, it’s time to understand that Russia is a fascist vertical of millions of people.
This was stated by adviser to the head of the Office of the President Mikhail Podolyak.
“Russian Permanent Representative in Austria Mikhail Ulyanov declares the need for a “final solution to the Ukrainian issue” and calls for genocide. Again they heard in Europe: “not all Russians are like Putin” and “it is necessary to let Nord Stream 2 work.” It’s time to understand: the Russian Federation – this is the fascist vertical of millions of people,” he wrote on Twitter.
These are the kind of vermin that need to be wiped out.