In a report released this week, Human Rights Watch confirmed that at least 18 Israeli airstrikes, during the Israel-Gaza conflict in November 2012, were in violation of international law.
A detailed investigation into the attacks revealed that 14 of the attacks on Gaza had no indication of legitimate military targeting, whilst the remaining 4 strikes, which targeted legitimate military targets, were indiscriminate and caused a higher proportion of civilian casualties.
Human Rights Watch's Middle East director, Sarah Leah Whitson, said:
"Israeli forces too often conducted airstrikes that killed Palestinian civilians and destroyed homes in Gaza without apparent legal justification,"
See here for a full analysis of each individual airstrike.