Actor Ben Affleck is joining U.S. Secretary of State Hillary Rodham Clinton in an effort to fight high child mortality rates across the globe.

Affleck appeared with Clinton at a child survival conference Thursday at Georgetown University in Washington.

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Actor Ben Affleck told the USAID Child Survival Forum at Georgetown University that high death rates for children under five worldwide are "abhorrent." (Jacquelyn Martin/Associated Press)

Affleck is promoting his group, the Eastern Congo Initiative, and calls high death rates for children under 5 years old "abhorrent" and "unacceptable."

Affleck says, "We wouldn't abide it in this country â€¦and we must not abide it in the world globally with our brothers and sisters."

Clinton says that saving children's lives "cannot be just a job for governments."

She announced that more than 60 organizations in 40 countries have joined an effort to promote breastfeeding, vaccines and health care for children.