'How would you feel?' Biden presses Putin on cyberattacks

"I looked at him and I said, 'How would you feel if ransomware took on the pipelines from your oil fields?'" said Biden at a news conference. "He said it would matter," he added.

Both Biden and Putin had said in advance of the summit that they hoped for more stable and predictable relations, even though they were at odds over everything from arms control and cyber-hacking to election interference and Ukraine.