Petrobras signs 22-year contract to buy gas from the USA
According to the state-owned company's management, long-term contracts help the company protect itself from short-term market price fluctuations.

TL;DR
- Petrobras has signed a 22-year contract for US natural gas.
- Long-term contracts are used to mitigate short-term market price variations.
- Company management views these contracts as a protective measure.