As oil markets start to anticipate the prospect of U.S. military intervention in Syria, just how high prices will climb could be anyone's guess, analysts say.
Brent crude oil prices hit a five-month high at about $111.68 a barrel on Monday after the U.S. government suggested it was moving towards a possible military response to last week's suspected chemical attack in Syria.
(Read more: US has 'little doubt' chemical arms used in Syria: Official)
They hovered around $111 in early Asia trade on Tuesday, with weaker-than-expected U.S. economic data helping push oil off their highs.