You can build wealth in the U.S. stock market, but it’s not always the best source of income. High-quality international stocks are quietly paying dividend yields well above the S&P 500 average yield of 1.05%. While venturing outside U.S. borders can improve your portfolio’s income, there are added risks. International financial reporting standards differ, exchange rates fluctuate, and political and regulatory environments can be fluid. Your taxes will likely get more complicated, too. And the income could be unpredictable: International dividends tend to be earnings-based and variable. For those reasons, it’s wise to proceed conservatively—with careful research and a commitment...