New Delhi, Aug. 21 -- Oil prices continued to rise on Thursday, supported by indications of robust demand in the U.S. and lingering uncertainty surrounding efforts to resolve the war in Ukraine.

Brent crude futures reached a two-week high in early trading, gaining 27 cents, or 0.40 per cent, to $67.11 a barrel at 0442 GMT. U.S. West Texas Intermediate (WTI) crude futures increased by 29 cents, or 0.46 per cent, to $63 a barrel.

Both benchmarks had advanced by over 1 per cent in the previous session.

As U.S. and European military officials started discussing post-war security assurances for Ukraine, Russia on Wednesday warned that addressing security concerns without its involvement would lead to a "dead end."

Ongoing challenges in ach...