'Ya'alon believes that even if Israel apologizes, citizens from Turkey or other countries could still file lawsuits against IDF soldiers and officers.' he's right. even if the turkish government will be satisfied, nothing prevents personal lawsuits. besides, apology is a sort of acceptance of quilt. why would anyone apologize if he/she has not done anything wrong. regret over the loss of non-innocent life should be enough.
Remand of Meir Ettinger, Israel's most wanted Jewish terror suspect, extended (Haaretz)
from the article: AG to Netanyahu: Apologize to Turkey or face indictments for IDF troops