Lol, desperately moving the goal post. Cute.
Did you miss the part when the Alliance sends a small army of hostile Night Elves into Quel’thalas before they even join the Horde?
See above.
The Alliance attacked them first. The Alliance was hostile to them before they even joined the Horde. The Alliance never showed they had any interest in re-establishing ties with the Blood Elves. The Blood Elves are not the ones who attacked first.