A cyberattack targeting water systems across 12 US states has exposed a disturbing question at the heart of America's critical infrastructure security. While the intrusions caused water pressure drops, flooding and operational disruptions, officials say the attackers stopped short of contaminating drinking water. Why? Could this have been a test run for something much bigger? Why did the hackers avoid targeting chemical dosing systems that could have caused catastrophic consequences? And what does this reveal about the security of America's water network? Watch the full report as we break down the cyberattack, the investigation, the possible geopolitical implications and why experts believe this could be a warning that Washington cannot afford to ignore.