1. Conditions of State environmental responsibility under international law

In theory, in the event of environmental damage, two types of international State liability may be incurred, depending on whether or not the damage was caused by a breach by the State of its international obligations (see 1 ). A distinction is thus made between so-called "no-fault" or objective liability, where damage results from dangerous but not prohibited activities (liability), and liability for damage resulting from violations of international law (responsibility).