Update state-developing-and-evaluating-countermeasures-to-protect-the…

[Dahianna]

…-state-departments-networks-worldwide.md

Fixes issue #410 Update to add impact story.

Checklist

• [ ] My code follows the existing style, code structure, and naming taxonomy
• [ ] I have performed a self-review of my own code and have no open issues
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] My changes generate no new warnings or syntax errors
• [ ] I have verified Draft on actual mobile devices, especially Safari-based

[jaredbain]

@Dahianna If there is no Impact, you can go ahead and remove the subtitle from the file. Otherwise, it looks good!