yeah, this is complete bullshit
Jaina was not leader, she was ONE OF SIX, so she is roughly 16% of "leader", yet she decided, WITHOUT consulting others to invite alliance soldiers into city (which is FOREIGN ARMY ffs) to arest and kill belf, AFTER cutting their escape roots (you had q to cripple dragonhawks so they cant escape)
btw, rest of the leadership in dalaran admited she was wrong to do so, thats why they allowed sunreavers back to dalaran in legion (took their fucking time)
and yeah, some belfs defended themselves, but what would you do? foreign soldier, without any authority over you whatsoever, comes to YOUR shop that you most likely run before he was even born, and tells you that even though you did nothing you are arested, would you just lie down and obey? especialy since its NOT FIRST TIME belf are being arested by alliance and sentanced to death in dalaran for doing nothing wrong, just out of pure spite and racism?! (if you dont know what im talking check Garithos and frozen throne campaign)
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well first of all Jaina was not leader, but ONE OF SIX (so roughly 16%) of leadership, so perhaps consult the rest first wouldnt be bad idea...
viable alternative to ethnic purge? well, there are many, how about actualy leting sunreavers know something is hapening and start investigating, instead to attack them out of blue while most of them didnt even had slightest idea some of their midst are traitors? sure they would be more likely to cooperate if you tell them what happend instead of summoning ALLIANCE soldiers to swing swords at them...
problem is all alternatives would help her get justice, and thats not what she wanted, she wanted revenge
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them warring on us? i dont remember zandalari ever atacking us, actualy in vanila they were our friends and we helped them in ZG against Hakkar...
perhaps you mean like they send reinforcements to other troll cities WE attacked?
closest they ever get to atacking us afaik was in padaria, and that was fraction that separated from actual zandalari wasnt it? and even then, they didnt realy atack us, they atacked pandaria, which is neither horde nor aliance teritory...