(Corrects to say China is the world's biggest energy consumer, not 2nd biggest, in 13th paragraph)
* ECB warns Greece that help is nearing an end
* Tensions in Iran and Syria escalate
* Snowstorm in U.S. northeast triggers gasoline rationing
* Coming Up: OPEC's monthly report for October, time unknown
By Ramya Venugopal
SINGAPORE, Nov 9 Brent crude futures edged above $107 on Friday and were poised to end the week with a marginal gain, their first in four, but prices are likely to remain under pressure as the outlook for the global economy, and fuel demand, remains weak.
Oil prices went on a rollercoaster ride this week. U.S. President Barack Obama's re-election ended weeks of political uncertainty and lifted prices, but a possible U.S. fiscal crisis, and more grim news about Europe's economic woes, weakened futures.
Supply worries caused by tension in the Middle East over Iran's nuclear programme and rising violence in Syria, however, are likely to continue to lend support to prices.
"Politics is going to take centre-stage as far as commodity markets are concerned," said Natalie Rampono, a commodity strategist at ANZ.
"At the same time, Syria and Iran will provide a little bit of support, so we expect choppy and sideways trading next week."
Front-month Brent futures traded 20 cents higher at 107.4 per barrel by 0250 GMT, so far posting a 1.6 percent gain on the week. It rose as much as 3 percent and dropped as much as 4 percent on some days this week.
U.S. crude added 21 cents to $85.30 per barrel, after posting gains of 4 percent and 5 percent during some of this week's sessions. It is up 0.5 percent so far this week.
A snowstorm in the northeastern United States, and gasoline rationing, are also likely to curtail demand and pressure prices further.
Greece remains the focus of the European crisis, with European Central Bank chairman Mario Draghi saying that the bank was done helping the near-bankrupt nation with its problems.
Draghi also gave a rather bleak outlook for the overall euro zone economy, saying it showed little sign of recovering before the year-end, despite easing financial market conditions.
In the United States, investors are now focused on the looming "fiscal cliff" - a $600 billion package of spending cuts and tax measures which may pull the economy into deep recession.
The International Monetary Fund on Thursday urged the United States to quickly reach an agreement on a permanent fix to avoid the fiscal cliff, saying a stop-gap solution could be harmful to the global economy.
Oil prices may get a boost next week after China announces October trade data on Saturday which is expected to show a slight pickup in imports, pointing to a recovery in domestic demand in the world's biggest energy consumer.
Iran's tensions with the West over its nuclear programme also appeared to take a turn for the worse after the Pentagon said on Thursday that Iranian warplanes fired at an unarmed U.S. drone in international airspace last week but did not hit the aircraft.
In Syria, rebels are fighting a 19-month battle against government forces, and skirmishes along the country's borders are escalating tensions with its neighbours, especially Turkey.
On Thursday, President Bashar al-Assad said he would "live and die" in Syria and warned that any Western invasion to topple him would have catastrophic consequences for the Middle East. (Editing by Miral Fahmy)