The position of individuals at the international plane still depends on the express or implied will of the state

The individual will benefit from treaty guarantees  so long as the state remains a party to the treaty

If the state withdraws from or denounces a treaty, this will end the individuals’ rights at the international plane against their own state.

Individuals may bring a claim at the international plane on the basis of their nationality, which places them under the domestic jurisdiction of
the state.

Individuals can sue states or be sued by states before an international
tribunal