What We're Following This Evening

Editor’s Note: This article previously appeared in a different format as part of The Atlantic’s Notes section, retired in 2021.

The conflict in Syria: Tomorrow marks the end of the first week of an informal cease-fire brokered by the U.S. and Russia, who have come to serve as proxies for the various factions fighting in Syria’s five-year-long civil war. UN envoy Staffan de Mistura said today that the pause is mostly holding up, despite clashes in some parts of the country. He said he hopes the reduced violence will allow peace talks to resume next week in Geneva; negotiations were canceled last month because of intensified fighting.

Debate night: The four remaining Republican presidential candidates will take the stage in Detroit at 9 p.m. ET. after a big week for the party. On Tuesday, Donald Trump further solidified his frontrunner status by winning primaries in seven states, garnering more delegates than Ted Cruz, Marco Rubio, and John Kasich. On Wednesday, reaction to Chris Christie’s facial expressions at Trump’s victory speech nearly broke the Internet. And today, Mitt Romney gave a scathing speech about Trump, calling him “a phony” and “a fraud.” Trump responded with some choice words. What I’m saying is, tonight’s debate is definitely one to watch.

A SCOTUS decision: The U.S. Supreme Court has denied a request by 20 states to block the EPA’s mercury-emissions rule while lawsuits proceed, handing a temporary victory to the Obama administration and environmental groups. Matt has more on this here.

News from this afternoon here