United States forces appear to have failed to take necessary precautions to avoid civilian casualties in a March 16, 2017 remotely-controlled aerial strike early on in Trump's period of office that killed at least 38 people in western Aleppo in Syria, Human Rights Watch said in a report released April 18, 2017
The 16-page report, “Attack on the Omar Ibn al-Khatab Mosque: US Authorities’ Failure to Take Adequate Precautions,” found that statements by US military authorities after the attack indicate that they failed to understand that the targeted building was a mosque, that prayer was about to begin, and that a religious lecture was taking place at the time of the attack. A proper analysis of the target and its use would probably have established at least some of these elements. Human Rights Watch has not found evidence to support the allegation that members of al-Qaeda or any other armed group were meeting in the mosque.(source of quote: Syria: US Mosque Attack Likely Unlawful; see also, Attack on the Omar Ibn al-Khatab Mosque). Once again, it is the US employment of their traditional hands-off remotely controlled airborne assassinations based on remotely-gathered indirect information that is the root cause of this problem, if the act of aggression had involved regular troops in contact with the community, this sort of mistake would not happen so frequently. Where is the US declaration of war on the state of Syria? What legal conditions sanction such an air strike by one foreign power on the territory of a sovereign state?