A perfect storm for Saudi Arabia may mean the golden age of oil is coming to a close.

Low oil prices threaten the kingdom's oil-dependent economy, and "doing nothing means it runs out of money by 2020," said John Mauldin, chairman of Mauldin Economics.



World oil prices fell yet again on Monday.

Mauldin told "Closing Bell" Monday that Saudi Arabia is acting like a company, taking the proper steps to stay afloat.