This quote was made by Putin in 2016 at some sort of a geography competition for schoolchildren.

The bottom right of the billboard says 2023 so it’s not clear how this billboard appeared today. But it is likely about this TASS article published in October, 2023: https://tass.ru/politika/18921495

Google translated excerpt:

“This was said for the first time in a conversation with one of the former presidents of the United States at my home, in Ogaryovo. I said it [the phrase] as a joke, of course, when he was looking at the map of the Russian Federation,” the head of state noted at the plenary session of the international discussion Valdai Club in response to a request to comment on his statement.

“But everyone knows, I want to repeat it again, that Russia remains the largest country in the world in terms of territory, but seriously, this [statement] first of all has a civilizational meaning,” Putin said.

“There are many of our compatriots living [abroad], the Russian world has a global character, the Russian language is one of the official languages ​​of the UN,” the president continued. “In Latin America alone, with whose parliamentarians we just met, 300 thousand of our compatriots live.

This is the kind of grasping at straws that Ukraine flag emojis do to convince themselves that theie enemies are ontologically evil.