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				 Oil has climbed around 15 percent this month due 
				to concern over the conflict in Yemen, Saudi Arabia's southern 
				neighbor. 
				 
				The seaways around Yemen are some of the most important for the 
				international oil trade with access points to the Red Sea and 
				Suez Canal as well as the Middle East Gulf. 
				 
				The U.S. navy said on Monday it had sent an aircraft carrier and 
				a guided-missile cruiser into nearby waters. 
				 
				Brent hit a 2015 high of almost $65 a barrel on April 16, up 
				more than 40 percent from a January low just above $45. 
				 
				Prices have also been supported by speculation over falling U.S. 
				output after data showing the number of U.S. exploration and 
				production oil rigs fell to their lowest since 2010. 
				 
				Brent crude for June <LCOc1> was down 30 cents at $63.15 a 
				barrel by 1105 GMT. U.S. crude for May <CLc1>, which was due to 
				expire later on Tuesday, was down 10 cents at $56.28 a barrel. 
				 
				"Geopolitics is supporting oil at the moment," said Tamas Varga, 
				analyst at London brokerage PVM Oil Associates. 
				 
				But the global oil market is heavily oversupplied and a rapid 
				build of inventories, particularly in the United States, has 
				been weighing on prices. 
				 
				U.S. commercial crude oil inventories are forecast to have 
				increased by 2.4 million barrels last week, rising for the 15th 
				consecutive week, a preliminary Reuters survey showed. <EIA/S> 
				 
				Saudi Oil Minister Ali al-Naimi told Reuters in Seoul this week 
				that the world's top crude exporter expected to produce at near 
				record highs of around 10 million barrels per day (bpd) in 
				April. 
				 
				Analysts warn that OPEC's ability to cope with an unexpected 
				surge in demand is diminishing fast. 
				 
				"If the demand and non-OPEC supply responses to lower prices are 
				similar to what was experienced in the 1980s, the very low level 
				of spare capacity carries a risk of a price spike in the not too 
				distant future," said analysts at PIRA Energy. 
				 
				OPEC's spare capacity could halve to as low as 1.7 million bpd 
				this year, far below the level of more than 10 million bpd in 
				the 1980s, when Saudi Arabia last opted for market share over 
				price. 
				 
				(Additional reporting by Jacob Gronholt-Pedersen in Singapore; 
				editing by Jason Neely) 
				
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