Trump in Riyadh: Controversy follows US president
President Trump is one of the world's most famous Twitter users - and that fact isn't being forgotten during his trip.
In addition to his main address he'll also make a short speech at a social media conference in Riyadh.
And, not surprisingly, his trip itself is a major social media topic
Al Jazeera's Andrew Chappelle reports on the online reaction to the visit.
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