Regime is a synonym of Government. State is a type of Government. Obligation is a type of State. 
Right is related to Direction. Direction is related to Flow. Flow is a synonym of Current. Current is the opposite of Later. 
Regime <--Synonym--> Government <--IsA-- State <--IsA-- Obligation 
Right <--RelatedTo--> Direction <--RelatedTo--> Flow <--Synonym--> Current <--Antonym--> Later 