NationStates Jolt Archive

Timor-Leste of course!

http://upload.wikimedia.org/wikipedia/en/a/a4/East_timor_flag_large.png

There's also an East Timor region, but it only has one nation in.

There are several missing flags, as can be found discussed here (http://forums2.jolt.co.uk/showthread.php?t=363820). If you want to use a flag that is not on the list, you are welcome to upload it in your settings screen.