I want to know the answer to the following question:
Against what government was the Hassi Messaoud defense agreement directed against?
All the background I'm provided with is that "Seeking to diversify Libya's economy, Gaddafi's government began purchasing shares in major European corporations like Fiat as well as buying real estate in Malta and Italy, which would become a valuable source of income during the 1980s oil slump.". Is that enough to answer the question?