Facebook and WhatsApp icons on a smartphone
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Facebook's $19bn WhatsApp deal explained in 60 seconds

20 February 2014 Last updated at 16:06 GMT

Facebook has bought messaging app WhatsApp in a deal worth $19bn (£11.4bn) in cash and shares.

In a statement announcing the deal, Facebook founder Mark Zuckerberg described the deal as "incredibly valuable".

The BBC explains the background to the deal - in 60 seconds.

Video produced by Michael Hirst