It's the informal group known as the International Community.

A large majority of the world engaging in sanctions and not the usual suspects regularly framed in the press as the "international community." It's framed that way to imply that the entire world is doing it besides a few "rogue states" like China, North Korea or Venezuela, as if they were handed down by the UN or the world is united in agreement with the western sanctions regime. What would be far more accurate than "international sanctions" would be "western sanctions."

For a more immediate example of how framing effects perception, look at all the people in this thread upset about China giving Russia weapons. No weapons are listed, just drones, helicopters, and metals. Upon opening the article you'll see the drones arrived before the war and are presumably consumer electronics, and there are six undefined types of helicopters. Some posters even mentioned attack helicopters, as if the Telegraph would not be screaming about attack helicopters and not helicopters if that was the case.

It's a complete nothingburger and like all nothingburgers it plays with language to let you fill in the gaps using the context they have provided. Russia is being "armed" with some consumer drones, six personal helicopters, and metal, and the whole world is in uproar about it.