Brent crude futures were down 1.2 percent at $91.62 a barrel, while WTI was down 1.2 percent at $85.49, Reuters reports. Pressure on the commodity market is exerted by investors' expectations about possible progress in peace negotiations to resolve conflicts in the Middle East and Ukraine.

Brent crude futures were down 1.2 percent at $91.62 a barrel, while WTI was down 1.2 percent at $85.49, Reuters reports. Pressure on the commodity market is exerted by investors' expectations about possible progress in peace negotiations to resolve conflicts in the Middle East and Ukraine.