Haley launches new ad on Trump's past comments about veterans after attack on husband

Republican Nikki Haley released a new digital ad attack against rival and former President Donald Trump on Monday, reviving his past comments mocking military veterans.

Republican candidate Nikki Haley on Monday released a new digital ad attack against rival and former President Donald Trump, reviving his past comments mocking military veterans.

The digital spot, shared exclusively with ABC News, is part of a $4 million ad buy from Haley's campaign and highlights comments made by the former president about the late Republican Sen. John McCain -- a Navy veteran who was a prisoner of war in Vietnam -- that Trump made during a 2015 CBS News interview in which he said McCain was was "not a war hero" and that he likes "people who weren't captured."

The ad also notes allegations from Trump's former chief of staff, retired Marine Gen. John Kelly, who said that the former president privately called deceased American World War veterans "losers" and "suckers" when he didn't want to visit a cemetery near Paris in the rain, something Trump has vigorously denied.

Haley's attacks come in the wake of another set of disparaging comments Trump made over the weekend about her husband, Maj. Michael Haley, who is currently deployed to Africa with the South Carolina Army National Guard.