Oil prices climbed on the back of biggest gains posted by the major benchmarks of the industry o Monday. However, the supply concerns have overgrown fears of the global economic slowdown. Brent increased 0.6%, to $68.01 a barrel. WTI rose 0.5%, to $60.46 barrel. The market has been supported by the US sanctions and OPEC supply cuts which have also concealed the concerns of global growth and US-China trade war.