Just like in the summer of 2014, fighting in northern Iraq is sending ripples through the oil market. A lot has changed in the meantime. Back then, IS was sweeping all before it; now, the wannabe caliphate’s collapse is allowing old tensions between Baghdad and the region’s Kurds to resurface. A lot has changed in the oil market, too. Brent …

President Donald Trump’s decertification of the Iranian nuclear deal is a mistake. Yes, its supporters have exaggerated the agreement’s benefits — but on balance, the world is better off with it than without it. In the near term, the decertification doesn’t really change much. The deal will remain in effect while Congress considers re-imposing sanctions on Iran, in effect killing …

Five or six years ago, with the hangover from the Great Recession still dominating the national conversation, macroeconomic policy was all the rage. Now, it’s an afterthought, with issues like health care, trade and energy taking center stage. But behind the scenes, macroeconomists have been rethinking the basics of how they approach their discipline. The Peterson Institute for International Economics, …