It is hard to deny what is depicted here!
Mexican Government Releases Proof of E.T.'s and Ancient Space Travel
In what will soon be considered as the Holy Grail of extraterrestrial research, the Mexican government has released ancient documents proving the existence of E.T.'s once and for all...
This documents were released in July 2012:
Previous released Ministry of Defense documents can be obtained from this website along with a host of other material.