Oil prices slump after Trump comments while analysts point to supply crunch

* Trump and Vance talk up Iran deal prospects

* Another two oil ​tankers exit ⁠Strait of Hormuz

* Official U.S. stockpiles data due at ​1430 GMT (Updates prices and price milestones, adds Woodmac estimate)

LONDON, May 20 (Reuters) - Oil prices lost about 3% on Wednesday after U.S. President Donald ​Trump ‌again asserted that the Iran war will end "very quickly", though investors remain wary about the outcome of peace talks as disruption to Middle Eastern ⁠supply continues.

Brent crude futures fell $2.97, or 2.7%, to $108.31 a barrel by ⁠1059 GMT and U.S. West Texas Intermediate futures were ​down $2.69, or 2.6%, at $101.46. Both contracts were heading for their biggest daily drops in percentage and absolute terms in two weeks.

"Prices are likely to still exhibit some upside potential even if a deal is concluded, given that supply will likely not return to ​pre-war levels ‌immediately," said LSEG research analyst Emril Jamil.

Both benchmarks fell nearly $1 on Tuesday after U.S. Vice President JD Vance said that the U.S. and Iran had made progress in talks. But Trump also said that the United States may need to strike Iran again and had been an hour away from ordering an attack before its postponement.

Analysts at Citi said on Tuesday ​that it expected Brent crude to rise to $120 a barrel in the near term, stating that oil markets are underpricing the ‌risk of prolonged supply disruption, and Wood Mackenzie estimated that it could approach $200 if the Strait of Hormuz stays largely shut until the end of the year.

Similarly, PVM ‌analysts said global oil stocks could reach critically low levels. "Yet, as observed lately, market players are comparatively nonchalant (or complacent) about what the conflict might bring," PVM said.

The premium on Brent contracts for delivery next month over contracts for delivery in six months <LCOc1-LCOc7> - ​an indicator of traders' views of current supply tightness - is around $20 a barrel, way below last month's highs above $35.

Two supertankers left the Strait of Hormuz ‌on Wednesday while another makes its way out after waiting for more than two months with 6 million barrels of Middle Eastern crude oil on board. The number of vessels crossing the strait remains well below the 130 or so ships that ⁠crossed daily before ⁠the war.

To make up the supply shortfall, countries are relying on commercial and ‌strategic inventories.

In the U.S., crude oil inventories fell for a fifth straight week last week, according to market sources citing American Petroleum Institute data. Fuel ​stocks also fell.

U.S. crude stockpiles ​reported by the Energy Information Administration are expected to have fallen by about 3.4 ‌million barrels, a Reuters poll showed. The weekly EIA data is due at 1430 GMT.

In another sign of the increasing supply crunch, Britain has watered down sanctions to allow imports of diesel and jet fuel refined abroad from Russian crude. (Reporting by Shadia Nasralla Additional reporting by Yuka Obayashi and Jeslyn Lerh in Singapore Editing by David Goodman)