The Galactic Council
Mentioned only in brief commentary by Brian Kinney (Altar Boy), the Galactic Council is understood to be some form of UN like governing group. Unlike a league of nations, this is on the scale of planets and star systems spanning (at least) the galactic region near Earth and the solar system. Their influence and organization may spread even further. Very little information about them is known to Earth authorities, despite the well published invasion attempts of the Enelsians in the late 1990s.
The K'ntarians are one of the leading members of the council.
It has been over 15 years since the last contact, but to an organization like the Galactic Council, that is probably a small fraction of time. They are believed to still be active, still monitoring our sol sector of the galaxy. But they are not intrusive. Unless the situation demands their attention, we probably won't hear from them for a long time to come.