At least Israel is democratic enough to hold a just trial and find the state responsible - within a conflict, incidents happen all the time. The question is whether they are brought to light or not. Do you think if a citizen of Gaza murdered an Israeli citizen, Hamas would hold a trial seeking justice? I think we both know the answer to that.
U.S. Democratic Senator Merkley airs support for Iran nuclear deal (Reuters)
from the article: Court holds state responsible for shooting of Palestinian girl