What is the fine-grained topic of the following text: International Brent crude oil futures were at $67.26 a barrel at 5:35 am, up 14 cents, or 0.2 per cent, while US West Texas Intermediate (WTI) crude futures were at $57.38 per barrel, up 11 cents, or 0.2 per cent, from their last settlement, said a Reuters report. Only return the topic.
International crude oil prices