Attack on Saudi oil supply demands measured response

The recent drone strikes in eastern Saudi Arabia represent a despicable assault on a pillar of the world's energy supply.

But with much still unclear about the incident, Washington and Riyadh must investigate with care as tensions mount in the region. The attack shut down half of Saudi Arabia's oil production at one point. Countries fearing a loss of supply from the world's largest exporter of crude oil should make use of emergency reserves to offset the shortfall.