Trump's Saudi embrace, Iran disdain upend Obama's vision: analysts

US President Donald Trump's emphatic embrace of Sunni Arab regimes and his vilification of Iran mark a stark departure from the vision of his predecessor Barack Obama in the volatile region, analysts say.Pointedly delivering his first foreign speech in Riyadh on Sunday, Trump praised the six-state Gulf Cooperation Council, specifically Saudi Arabia, for efforts to cut off funding to extremists while lambasting Iran as the "spearhead of terrorism".While the unpredictable Trump completed the visit