Winners and Losers From Oil's Worst Slump Since 1991

What factors contribute to Mexico's favorable position in the oil market according to the text?

How does the situation in Venezuela differ from that of Russia in the context of the oil market?

What are the implications of Saudi Arabia's actions on Russia's oil industry?

What challenges does the Saudi economy face in relation to its oil dependency?

In what ways does Russia's economy provide it with a stronger position compared to Saudi Arabia?