I believe it’s the western states which are in rebellion, which have significant Muslim populations. North Korea is being threatened with invasion and China is encircled by US allies and military bases.
A comparable situation for the US might be native Hawaiians campaigning for independence, while the majority population just doesn't care. There are probably such groups already, they just haven't resorted to violence enough/encountered a strong enough reaction by the state to become notorious.
If you or anyone knows, which territories are trying to join a neighboring country?