Attacks On The US Cyber Infrastructure

In 1000 words answer the following questions below. Please select 5 sources to support your answers, in addition to evidence base examples.
 

1. what makes the US most vulnerable across the world when it comes to our cyberinfrastructure.
2. What countries around the world are invested/interested in the US cyber infrastructure?
3. Why does their interest in the US cyber infrastructure makes us vulnerable?
4. What assets are being sought?
5. Who is seeking these assets?
6. What can other countries gain from conducting cyber-attacks on the US cyber infrastructure i.e US Colonial Pipeline?