Saudi Arabia faces a “humiliating dilemma” after the United States refused to militarily intervene to prevent the Iran-aligned Houthi militia from tightening its blockade of the kingdom’s key backup maritime trade route with Asia, according to analysts. US President Donald Trump on September 12 dismissed the Houthi seizure of Yemen’s entire Red Sea coast as a problem that “only affects one country”. Iran has already blockaded the Straits of Hormuz, Saudi Arabia’s main oil and petrochemicals...