There was once such a case.

The two countries are adjacent. Country A's industry is developing rapidly. There are many towering smokestacks, and a lot of waste is discharged every day.

Because of the air flow, some of these wastes "invade" into neighbouring country B!

So Country B asked Country A to compensate for the cost of pollution control by tens of billions of yuan.

State A refused, so State B sued State A before the International Court of Justice.

In the end, the International Court of Justice ruled that Country A must bear a certain proportion of the costs of Country B in air pollution control.

This case fully...