Business and finance help needed to summarize a case, covering the most pertinent information

First summarize the case, covering the most pertinent information.

Then answer these questions.

1. When, if any, is running roughshod over contracts justified?

2. How should Petrobras respond to Ecuador’s unilateral revision of its contracts? Which decision parameters and stakeholders should it consider?

3. Are foreign investors in partially privatized companeis, and in general, ever safe?