After a drone attack from Iranian-backed militias on a US military base killed 3 US troops on Jan 28, US President Biden vowed to "hold all those responsible to account at a time and in a manner our choosing."

This market will resolve to “Yes” if there is a US response to the drone attacks by January 31, 11:59 PM ET. Otherwise this market will resolve to “No.”

A response by the US refers to action(s) carried out by the US that are explicitly in response to Iran’s drone attack, which may include strikes, cyber attacks, sanctions, etc.

The resolution source will be official sources from the US government, however a consensus of credible sources will also be used.