Mark Zuckerberg is countering calls to break up Facebook, saying that doing so would only diminish his company's billion-dollar attempts to fix the social network.

"The amount of our budget that goes toward our safety systems I believe is greater than Twitter's revenue for this whole year," Zuckerberg told journalists on a press call on Thursday.

Zuckerberg made the comment in response to co-founder Chris Hughes' call to break up Facebook. According to Hughes, the Federal Trade Commission made a grave mistake in letting Facebook buy WhatsApp and Instagram, which helped the company gain control over the social networking market.

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