The mother of one of the four Americans killed in the siege on an U.S. outpost in Benghazi, Libya, is taking on Hillary Clinton.

Pat Smith tells Republican delegates at their convention: “If Hillary Clinton can’t give us the truth, why should we give her the presidency?”

Smith’s son, Sean, was a State Department foreign service officer Sean Smith who died in the 2012 attack.

Pat Smith says she blames Clinton — who was secretary of state — “personally” for her son’s death.