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* Lower Iran exports, North Sea and OPEC cuts support prices
* Trade tensions keep Wall Street, oil under pressure
* OPEC-led panel meets on Sunday to review supply pact
* U.S. oil drillers cut rigs to lowest count since March 2018 (Adds Baker Hughes data, equities market)
NEW YORK, May 17 (Reuters) - Oil prices edged lower on Friday, but both benchmarks were on track for a weekly gain on rising concerns over potential further supply disruptions in Middle East shipments due to U.S.-Iran political tensions.
Iran said on Friday it could "easily" hit U.S. warships in the Gulf, the latest in days of saber-rattling between Washington and Tehran, while its top diplomat worked to counter U.S. sanctions and salvage a nuclear deal denounced by President Donald Trump.
U.S. sanctions on Iran have already cut the OPEC member's crude exports further in May, adding to supply curbs implemented through an OPEC-led pact for the first six months of the year.
Brent crude was down 44 cents, or 0.6%, at $72.18 a barrel by 1:40 p.m. EDT (1740 GMT). The global benchmark was set to rise about 2% this week, having ended last week largely steady and fallen the week before.
U.S. West Texas Intermediate crude fell 7 cents to $62.80, and was on track for a weekly gain of about 1.8%.
Oil prices came under pressure on Friday from seesawing U.S. equity markets due to fears over global economic growth amid a standoff in Sino-U.S. trade talks.
Chinese media took a hardline approach to the tariff dispute between the Washington and Beijing, saying the trade war will only make China stronger and will never bring the country to its knees.
"Despite what we view as a balanced oil market both domestically and globally, oil pricing is apparently still sensitive to evolving developments in the Persian Gulf where occasional minor military events are slowly cranking up geopolitical risk premium," said Jim Ritterbusch, president of Ritterbusch and Associates.
Iran's foreign ministry on Friday rejected accusations by Saudi Arabia that Tehran had ordered an attack on Saudi oil installations claimed by Yemen's Iran-aligned Houthi militia.
Iran's elite Revolutionary Guards (IRGC) are "highly likely" to have facilitated attacks last Sunday on four tankers including two Saudi ships off Fujairah in the United Arab Emirates, according to a Norwegian insurers' report seen by Reuters.
A Saudi-led military coalition in Yemen carried out several air strikes on the Houthi-held capital Sanaa on Thursday.
"When tensions are this high, with the U.S. deploying a sizeable military force, even a mistake or a tactical error by Iran could ignite the Middle East powder keg," Stephen Innes, head of trading and market strategy at SPI Asset Management, told Reuters by email.
"There are lots of supply risks with tensions this high."
Besides the drop in Iranian exports, Russian shipments have been disrupted and the North Sea - home to the crude underpinning Brent futures - is also in tighter supply owing to oilfield maintenance and outages.
The market is also awaiting a decision from the Organization of the Petroleum Exporting Countries (OPEC) and other producers over whether to continue with supply cuts that have boosted prices more than 30% so far this year.
A meeting of an OPEC-led ministerial committee in Saudi Arabia this weekend will assess member states' commitment to their deal to reduce oil production and could make a recommendation on whether to extend or adjust the pact.
The mounting Middle East tensions overshadowed bearish developments for oil prices this week, such as an unexpected increase in U.S. crude inventories and consistently record-high production levels.
However, U.S. energy firms this week reduced the number of oil rigs operating for the second week in a row, with the rig count at its lowest since March 2018, as some drillers follow through on plans to cut spending.
(Additional reporting by Alex Lawler, Aaron Sheldrick and Colin Packham; Editing by Marguerita Choy and David Goodman)