Sandberg was speaking at an interview hosted by German newspaper Die Zeit and UK law firm CMS at the World Economic Forum in Davos, Switzerland.

German Chancellor Angela Merkel on Wednesday said countries like India and China have begun affecting the world economy much more today and that needs to be taken into account for having a relook at the global trade and financial systems.

China and the United States cannot do without one another, one of Beijing's most senior officials said Wednesday, as the world's two biggest economies struggle to end a damaging trade war.