Trump latest: US president shakes hands with Saudi Arabia’s Mohammed bin Salman as he arrives for Middle East tour

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Watch: Why are all roads leading through Saudi Arabia? Our US correspondent Mark Stone, who is in Riyadh, says there's "huge excitement" for Donald Trump's visit. But he explains that "so much has changed" since the US president visited Saudi Arabia in his first term. "Saudi Arabia and other Gulf Arab countries are much more politically confident," he says. "Now, Saudi Arabia sees itself as a regional, perhaps even global power broker." While business, investment and commerce has been flowing through the country, it is now also the stage for foreign diplomacy with US officials holding multiple rounds of peace...