12/28/1981
https://www.presidency.ucsb.edu...
"What could be said about Soviet credibility when they so flagrantly lie about such a heinous act?"
"I have ordered the flags of the United States flown at half staff at all Federal installations and U.S. military bases around the world."
"Our prayers are with them in this time of bereavement."
"The United States joins with other members of the international community in demanding a full explanation for this appalling and wanton misdeed."