* U.S. attacks military targets at Iran's Kharg Island

oil terminal

* Iran's Islamic Revolutionary Guard Corps (IRGC) said US

interests in UAE are legitimate targets

* Fujairah loads UAE Murban crude; impact on loadings not

clear

* Iran warns residents to leave Fujairah, two other UAE

ports

(Adds Iranian threat regarding Fujairah and two other UAE ports

in paragraphs 6-7)

By Sarah El Safty and Nidhi Verma

DUBAI, March 14 (Reuters) - Some oil-loading operations

have been suspended in the United Arab Emirates' Fujairah

emirate, a major bunkering hub and crude export terminal, after

a drone attack and fire on Saturday, industry and trade sources

said.

The suspension comes hours after the U.S. attacked military

targets on Iran's Kharg Island oil export terminal and Iran's

Revolutionary Guards (IRGC) responded by saying that U.S.

interests in the UAE - including ports, docks and military

locations - were legitimate targets.

Fujairah, outside the Strait of Hormuz, is the outlet for

about 1 million barrels per day of the UAE's Murban crude oil -

a volume equal to about 1% of world demand.

A witness in Fujairah saw two separate columns of smoke

rising from the terminal. Reuters could not immediately

establish the impact on loadings.

"The IRGC is sending a message that there is no safe harbor

in this rapidly expanding conflict," said Helima Croft, analyst

at RBC Capital. "The fact this comes hours after the U.S. strike

on Kharg Island also signals that Tehran will not let Washington

control the terms of escalation and impose dominance."

The International Energy Agency said earlier this week that

the world was facing its biggest ever oil supply crisis due to

the effective closing of the Strait of Hormuz, a channel along

the Iranian coast, since the U.S. and Israel began airstrikes on

Iran on February 28, with the UAE among producers forced to cut

oil output.

Iran threatened more UAE ports on Saturday, warning

residents to leave areas near Jebel Ali port in Dubai, Khalifa

port in Abu Dhabi as well as Fujairah, Iranian news agencies

reported.

The UAE Foreign Ministry did not immediately respond to a

request for comment on Iran's accusation that the attack on

Kharg Island had come through the UAE.

REGIONAL ENERGY INFRASTRUCTURE UNDER PRESSURE

The fire in Fujairah occurred after debris fell during the

interception of a drone, but no injuries were reported, the

emirate's media office said.

Civil defence forces are handling the incident to contain

the fire, it added. Authorities did not provide any information

about the suspension of operations.

Abu Dhabi state oil giant ADNOC, which operates in the

emirate, did not immediately respond to a request for comment.

On Tuesday, ADNOC shut its Ruwais refinery in response to a

fire at a facility within the complex following a drone strike,

a source with knowledge of the situation said, in further

disruption of energy infrastructure due to the U.S.-Israeli war

on Iran.