LONDON  - Crude prices pulled lower Tuesday on falling global demand concerns, but losses were capped by geopolitical jitters over major oil producer Iran, analysts said.Brent North Sea crude for delivery in November dropped 66 cents to $115.14 an ounce in London midday deals. The contract expires at the close.New York’s West Texas Intermediate (WTI), or light sweet crude for November delivery, slipped 23 cents to $91.62 a barrel. The oil market remains under pressure from demand fears linked to the weak global economic outlook — particularly surrounding the ongoing sovereign debt crisis in the eurozone, dealers said.“We have concerns about the economy, in particular Europe exerting downward pressure, but supporting oil are the tighter sanctions on Iran from the EU,” said Purvin and Gertz analyst Victor Shum.European Union foreign ministers on Monday agreed tough new sanctions against Iran, aimed at forcing a breakthrough in talks on Tehran’s nuclear programme, and also against the regime in war-ravaged Syria.The new sanctions target EU dealings with Iran’s banks, shipping and gas imports. Details of those targeted will be released later Tuesday but a government minister is on the new blacklist, diplomats said.In reaction, Tehran said Tuesday that the latest round of EU economic sanctions imposed over the country’s disputed nuclear programme are “inhumane” as they target its general population. “Unilateral European and US sanctions against Iran are irrational, illegal and inhumane, and are against the Iranian nation,” foreign ministry spokesman Ramin Mehmanparast said.Speaking on state television, Mehmanparast accused the West of using the nuclear issue as a pretext to apply pressure on Tehran for “insisting on its own independence.” Western powers suspect Iran is using to the programme to develop atomic weapons capability. Iran denies that and says its nuclear activities are purely peaceful.Elsewhere, traders were looking to an EU summit starting Thursday for any breakthroughs on the fragile regional economy as debt-hit Spain continues to delay requesting a bailout while Greece negotiates for future funding.“Spain continues to be a thorn in the side of traders as it supposedly teeters on the edge of EU financial aid,” said Justin Harper, an analyst with IG Markets Singapore.“While many had hoped it would have already secured a bailout package, trading floor folk are talking about November as the earliest the Spanish government will go cap in hand to the European rescue fund.”