There is absolutely; undoubtedly and infallibly only ONE Key to Gibraltar's future prosperous and secure self-determination and that is the ONE on its flag, which is there for all to see; except "the blind being led by the blind", naturally.
Gibraltar's Flag, which originated as the Ensign of the Phoenician/British/Israelite Tribe of Gad; who was Jacob/Israel's (Gen. 32:28) eighth son (Gen. 30:11) and was Brit-ish not Jew-ish (Judah/Jew-dah -ish was Jacob's fourth son and one of Gad's half-brothers not his dad); has sadly been deprived of its best colour - The Ruler of The Universe's colour - the colour blue, and He is definitely not amused by its removal (because He considers it to be an insult to Him and His Sovereignty of heaven - The Universe. To find out why , please continue reading).
The very first inhabitants of Gibraltar, since the Creation of Adam, were NOT Spanish they were Brit-ish Gadites who arrived between 1500 and 1000 B.C. and were later joined by more Gadites in 722 B.C., the latter-arrival being recorded in the Gibraltar museum as Phoenician.
Their military "Camp" (castle) of Gibraltar, that, on their Ensign/Coat-of-Arms, has been changed to red, which, according to Christ, is God's enemy Satan's colour, should, in reality, out of respect for God, be deep blue; like the blue on the "Union (of) Jack"-ob /Israel - the Brit-ish flag.
In Heraldic-Symbolism the flag's red base represents the "blood-soaked" earth; the devil's domain (Rev./Apocalypse 12:1-9); where he walks to and fro (1 Peter 5:8) seeking to devour and to destroy, YOU (along with your ecological life-support system; so far with great success).