TAX OIL, CRUSH VLAD AND THE SA'UDS:

The Russian ruble fell to a four-year low after oil prices collapsed following a breakup of talks between OPEC leader Saudi Arabia and Moscow.

The ruble tumbled early on March 9 by 5 percent to 72.72 against the U.S. dollar, the worst rate since early 2016.

Meanwhile, oil prices crashed 20 percent in opening trading on March 9 as concerns of an oversupply in the market resurfaced after the so-called OPEC+ grouping, which includes Russia and Kazakhstan, failed to reach an agreement in Vienna last week on extending output cuts to bolster prices.

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