From thehill.com
![Congress struggles on rules for cyber warfare with Iran](https://thehill.com/sites/default/files/styles/thumb_small_article/public/antiwar_protesters_iran_010920gn6_lead.jpg?itok=9UTWLsi9)
The U.S. and Iran may have walked back from the brink of war, but the potential for a cyber battle looms with no clear rules of engagement.
Lawmakers and military officials say there’s no agreed-upon definition of what constitutes cyber warfare, leaving them to decide on a case-by-case basis how best to respond to individual incidents.