I want to know the answer to the following question:
An otherwise valid and agreed upon treaty may be rejected as what for several reasons most of which involve problems created at the formation of a treaty?
All the background I'm provided with is that "There are several reasons an otherwise valid and agreed upon treaty may be rejected as a binding international agreement, most of which involve problems created at the formation of the treaty.[citation needed]". Is that enough to answer the question?
Answer: yes