Jews were humiliated for millenia and an apology, even an insincere one, would have been considered no problem at all. We are now in a new era, and different Jewish groups adopted different modes of behavior. There were the majority pragmatists, but the Revisionists put great emphasis on national honor, according to the Jabotinsky teaching of "Hadar" (Honor). Arlozorov was assassinated (1933) because he dared to negotiate a deal with Nazi Germany to allow Jews and their property out, thus "stained national honor". M. Begin threatened a civil war when Israel agreed to the Reparation Agreement with post-war Germany. Honor! With the refusal to apologize to Turkey, thus giving up a major achievement of Israeli diplomacy which already David Ben-Gurion pursued, we come back to this issue which afflicts "true" Likudniks. The recent former Russians are of course not ideologues, just Brute Soviets. They object to apologizing in principle, lest you appear weak. Just to address the basic issue: Israel killed 9 Turks by using inappropriate means of control. This requires an apology, and even compensation.
PM: We'll surround ourselves with fences in defense against the wild beasts around us (Haaretz)