If U.S. President Donald Trump had already succeeded in his real core aim of changing the regime in Iran, the world would very different today — and Washington’s leverage over Beijing and Moscow would have expanded dramatically. A pro?West Iran, led by a government aligned with Washington, would control the vital Strait of Hormuz and the Bab el?Mandeb Strait, which together account for up to 45% of global oil flows. And with Washington directing the strategic framework, China would not continue receiving discounted Iranian oil if a…