is international customary law binding, and if so on who? (1 Viewer)

[muffinscribble]

is international customary law similar to domestic customary law, where a concept or value is established over a long period, and is eventually made into law because the majority of society hold those values?

also is international customary law binding on states, and if so how so they become binding? ive heard they're binding on memebers of the UN but is it restricted to UN members only?