On 14 July 2018, the Israeli military carried out an airstrike on a
building in Gaza which it claimed the Hamas used for training purposes. A
joint investigation by B’Tselem and Forensic Architecture found that
the strike began with the launching of four missiles the military termed
“warning missiles.” The first killed two 14-year-olds who were sitting
on the rooftop at the time. The investigation also found that the video
clip the military released of the attack omits footage of the strike in
which the two boys were killed while the impact of the third missile is
shown twice. The firing of lethal missiles as a means of warning is
unlawful and, for all intents and purposes, constitutes an attack. As
such, the action must abide by the applicable rules set out in
international law, including adhering to the principle of
proportionality and the duty to provide effective warning. None of this
was done in the case at hand