The US solar industry is threatened by one of President Donald Trump’s more destructive impulses: his eagerness to punish supposedly unfair trade practices. By next month, the US International Trade Commission, having unanimously ruled that American solar-panel makers are harmed by competition from Asian and other rivals, will recommend what tariffs or other import penalties the president should impose. The …

The drama around President Donald Trump and Iran’s compliance with the nuclear deal has grabbed the oil world’s attention. This gaze should shift west. Rising tensions in northern Iraq could have a much more immediate impact on oil flows that could lead prices higher, and squeeze producers and refiners. The collapse of so-called IS in Iraq ought to be a …

Central bank sleuths are on the case. What explains the ‘mystery,’ to use Janet Yellen’s word, behind low inflation and strong employment? It’s a question that requires global detective work, a point amplified by the Federal Reserve minutes this week when someone (who may have been Yellen) remarked on the global nature of the challenge. Inflation and wages remain stubbornly …