Dubai, June 25 -- U.S. Secretary of State Mike Pompeo held talks Monday with leaders in Saudi Arabia and the United Arab Emirates about countering the military threat from Iran by building a broad, global coalition that includes Asian and European countries.

While Pompeo has seemingly willing and wealthy partners in the two Arab allies, he is likely to face a tough sell in Europe and Asia, particularly from those nations still committed to the 2015 nuclear deal with Iran that President Donald Trump repudiated last year.

With tensions running high in the region after Iran shot down a U.S. surveillance drone on June 20 and Trump said he aborted a retaliatory strike, Iran's naval commander warned that his forces won't hesitate to down more...