Face to Face: Sheryl Sandberg and Melinda Gates

Face to Face: Sheryl Sandberg & Melinda Gates

Sheryl Sandberg believes that two countries run by women will never go to war. With a bevy of issues, including terrorism and human displacement, facing governments and businesses this year, more women should be included in decision-making processes, the Facebook chief operating officer said on Friday.

"Let's get some women to the table," Sandberg told CNBC at the World Economic Forum in Davos.

Sandberg and Melinda Gates, co-founder of the Bill and Melinda Gates Foundation, touched on topics from disease and poverty to technology and New Year's resolutions in a wide-ranging interview on Friday.

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Gates discussed the foundation's efforts to improve conditions in developing areas, where she "[goes] in as an anonymous woman from the West in khakis and a T-shirt" to listen to residents. Innovations deployed to fight poverty will yield big dividends in the near future, Gates said.

Sheryl Sandberg and Melinda Gates at 2015 WEF in Davos, Switzerland.
Katie Kramer | CNBC

"We're betting that the lives of the poor in the next 15 years will improve more than in any time in the history of the world," Gates said.

She added that polio has proved the "greatest example" of the progress made in developing countries.

"We are literally in the last kilometer of finishing that disease," Gates said.

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Sandberg and Gates also discussed some lighter topics, including the worst job they've ever worked. Sandberg's came at a "terribly-run clothing store" at a mall, while Gates remembers cleaning ovens and mowing lawns while saving money for college.

When asked about their favorite hardware platforms, Sandberg said she uses a variety of brands. Gates, of course, chose the Windows phone.

Sheryl Sandberg and Melinda Gates spoke to CNBC as part of the "Face to Face" series, a collaboration with Facebook.