Words of outrage over the chemical weapons attack in Idlib, Syria must evolve into action—diplomatic action to protect innocent civilians and bring about a lasting and long overdue peace. Here are four things the U.S. can and must do now to help Syrians whose lives have been shattered by six years of war.

Tens of thousands of Syrians who fled the traumatic bombing of Aleppo are crowded into shelters in Idlib province. The IRC is there providing cash relief, trauma counseling and other emergency support to hundreds of recently-arrived families.

The chemical weapons attack in Idlib is only the latest in a series of attacks on the 2 million people now living in the province--including 700,000 who had already fled fighting in other parts of Syria. What's worse, the attack happened during the latest declared ceasefire in a six-year-long war with no end in sight.