The next President needs to take meaningful action in Syria

As presidential contenders Hillary Clinton and Donald Trump debated last week, Syria was a sideshow. Clinton mentioned the country in passing; Trump ignored it altogether.

While they sparred over responsibility for the Islamic State, neither candidate mentioned Aleppo, a city of 2 million people reduced to rubble and under siege. At least — unlike Libertarian candidate Gary Johnson — they knew what Aleppo was. President Obama hotly rebuffs those who say his hesitancy to enforce redlines or support a no-fly zone made the Syria conflict worse.

Obama, Trump, Democratic runner-up...