Oil prices spike as Saudi Arabia, Russia extend 1.3 million barrel.

Saudi Arabia and Russia agreed Tuesday to extend their voluntary oil production cuts through the end of this year, trimming 1.3 million barrels of crude out of the global market and boosting energy prices.

The dual announcements from Riyadh and Moscow pushed benchmark Brent crude above $90 a barrel in trading Tuesday afternoon, a price unseen in the market since November.

The countries' moves could increase inflation and the cost for motorists at gasoline...