The first year of the ... air war against Isis has already seen more than 17,000 bombs and missiles dropped on Iraq and Syria. The coalition has conceded just two civilian deaths. Asked how many other non-combatants have died, officials demurred: We aren't going to speculate on this subject," one senior CENTCOM spokesman recently told me. There's rather less discomfort when it comes to boasting of how many enemy fighters are dead: 15,000 at their last count. Addressing this information gap, the monitoring group ... Airwars has examined all known claims of civilian deaths during the last year. In this time there were almost 120 such alleged incidents of non-combatants being affected by air-strikes across Iraq and Syria. In more than 50 cases we felt there was enough evidence - often including photographs, eyewitness testimony and the names of victims - to strongly indicate civilians had been killed by the coalition. It's likely that between 459 and 591 non-combatants died in these attacks, including 100 children. The Ministry of Defence asserts that "We are not aware of any incidents of civilian casualties as a result of UK strike activity over Iraq." It's impossible to test that claim publicly, and with eight other nations also bombing that country there is little chance of accountability for those civilians affected. Syria is even more of a free-for-all, with Israeli and Turkish jets carrying out strikes alongside the Coalition and the Assad regime.