Is the statement and interview given by Haim Eshed, former Israeli Defense Ministry space directorate, true that the US government has an ongoing agreement with a Galactic Federation of Extraterrestrials, and that Pres. Trump knows and considered announcing it but was asked not to by the aliens?

This is quite true and your reaction is an appropriate one. Anything that raises the specter of an imminent disclosure is cause for alarm because it is a prelude to the annihilation plans unfolding further. This was a unilateral act by someone seeking the limelight and not an official representative of the Extraterrestrial Alliance or manipulation on their part to begin a more formal announcement to the world. This will prove to be a testing of the waters to gauge the reaction and this feedback will prove to be helpful to them, but they are already quite aware that disclosure will be working counter to the careful long-term subconscious programming of the human population to disbelieve in extraterrestrials. So it will take more than innuendo or individual whistleblowing without an official backing, albeit here by someone with official credentials. That adds some credibility, but it will not be enough to make the story break and be accepted widely in the press.