European benchmark Brent crude declined on Monday narrowing the WTI-Brent spread for the first time in a six-day period after the biggest producer of the OPEC, Saudi Arabia, exported 10.12 million barrels of the oil per day in September. Brent for January delivery slipped 44 cents to $108.06 a barrel on the London's ICE Futures Exchange, while the WTI-Brent spread shrank to $14.01.