August 13, 2015
At this time of tragedy, the United States extends its heartfelt condolences to the Chinese people over the deadly explosion that occurred on August 12 in Tianjin. Our thoughts are with the victims and their families, and with China's first responders who are working to help those who were injured.
Barack Obama, Press Release - Statement by NSC Spokesperson Ned Price on the Explosion in Tianjin Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/310626