Turkish President Abdullah Gul said on Monday that the worst case scenarios between his country and Syria are now playing out, fuelling concerns that the 18-month old conflict in Syria may spread to other countries in the region.
"Right now the market is concerned about the continuing conflict between Syria and Turkey, and the worry is that if it escalates, it may disrupt Brent supplies," said Ker Chung Yang, senior investment analyst at Phillip Futures in Singapore.
Front-month Brent futures had risen 69 cents to $112.51 per barrel by 0301 GMT. US crude gained 79 cents to $90.12, also rebounding after two consecutive sessions of declines.
Tensions between Syria and Turkey increased to their worst since March after cross-border firing accidentally killed some Turkish civilians last week, causing Istanbul to boost its military presence along the Syrian border.
This could threaten oil production in the north of Iraq and its transport to the West, analysts said.
Turkey's armed forces have been responding in kind to gunfire and shelling spilling across from the south, where Syrian President Bashar al-Assad's forces have been battling rebels who control swathes of territory.
Concerns over Turkey-Syria have eclipsed Iran's long-running row with the West over Tehran's disputed nuclear programme that has led to sanctions on Iranian oil shipments and dragged its currency to a record low.