Oil prices are rising Tuesday morning amid growing concerns about the prolonging of the conflict in the Middle East.

Accordingly, Brent crude oil futures for November delivery were at $97.91 a barrel on the ICE Futures stock exchange in London, up $0.91 (0.94%) from their previous day’s close. On Monday, they had risen $0.72 (0.75%) to $97 a barrel.

And WTI crude oil futures for October delivery went up $1.83 (2%) to $93.31 a barrel in online trading on the New York Mercantile Exchange (NYMEX). But the main trading of WTI did not take place on Monday due to a holiday in the US.