UAE/Egypt attacked according to American intelligence in the region. Which proves that they're aiding General Haftar and his forces.
Wrong-
A senior US official told the BBC that Washington was not consulted about the attacks and was "caught off-guard".
BBC News - Libya crisis: US 'caught off-guard' by air strikes
Egypt has a larger diplomatic and therefore intelligence presence in Libya than the US. If these strikes were truly carried out by Egypt and the UAE there would be no need to use any intel from the states.
The strikes were against miltias part of "Operation Dawn" who were fighting the
Zintan Brigades (who are allied to the government) for control of Tripoli Airport. General Haftar's forces are mainly concentrated in eastern Libya fighting Ansar Alsharia, the most recent air strikes do not benefit his forces.
But, it's also puzzling why the UAE would be involved and who's airspace did they cross to do this.
It is puzzling, these unnamed US sources claim the strikes were carried out by UAE craft from Mursa Matruh AFB, however, that doesn't make sense nor does it make sense that a nation that has not been involved at all in the Libya crisis (except for the 2011 intervention) would carry out any strikes.
It is confirmed now UAE had conduct airstrikes inside Libya with assistance of Egypt through their borders.
However, they failed the operation.
Libya is now in total control of Islamist after the fall of Tripoli airport.
The end.
These were not the first strikes against "Operation Dawn" militias nor do I think they will be the last. They were not meant to defeat any militias completely, that can only be done by militants on the ground. We may see a prolonged air campaign against these militias by the nation or nations that perpetrated the previous strikes.
Ive got a feeling this movement in Libya is going to join the IS as well. Egypt is about to find itself battling its east very soon.
"Operation Dawn" militias are mainly situated in the West of Libya and they are made up of more moderate (a relative word here, they are still extremist) fighters compared to Ansar Alsharia in the east which has links to IS. Libya also has Alqaeda affiliated forces operating within it, which may result in the same scenario we see in Syria where Alnusra are fighting IS.
Egypt is already 'fighting' on its western border. It is a threat that the Armed Forces is very much alive to.