INTERVIEW-A million may be hungry in Syria as winter bites - WFP

* U.N. agency fed 1.5 million Syrians in November

* Some 4 million may need help in coming months, it says

* Damascus once safer but security has worsened

DUBAI, Dec 6 (Reuters) - Worsening security in Syria means

aid groups are unable to reach a million people who may be going

hungry as winter closes in, the head of the World Food Programme

(WFP) said on Thursday.

The United Nations said this week it would suspend aid

operations in Syria as a 20-month civil war tips the country

further into anarchy and more civilians get caught in the

violence.

But Ertharin Cousin of the WFP said only non-essential U.N.

administrative staff had pulled out. Her U.N. agency would

continue its work for now and "will keep as many staff in Syria

as we can for as long as we can".

She said 2.5 million people needed help and the WFP had

reached 1.5 million of them in November, up from 250,000 in

April. One major effort as the weather turned colder was to

distribute blankets and fuel for cooking and heating.

"Security... doesn't exist," she told Reuters in an

interview. She said the WFP lacked access and equipment and "it

has been estimated that the numbers (needing help in coming

months) can go up to 4 million".

WFP food supplies are mainly distributed by the Syrian Arab

Red Crescent society and a few other local partners. The needy

include some 1.1 million people who have been forced from their

homes and are sharing apartments or camping in public buildings.

More than 40,000 people have been killed in the fighting

between rebels and forces loyal to President Bashar al-Assad.

Damascus had been considered safer than other cities until

last week when the capital's main airport was shut down and

flights into Syria cancelled after several rebel attacks.

"The reality is not knowing how the situation is going to

evolve, watching the conflict escalate in the north, not knowing

what is going to happen in and around Damascus. It is

challenging to say what will be the outcome in the coming

months," said Cousin.

Some WFP staff had relocated to Damascus from Aleppo, which

has seen some of the fiercest fighting and heaviest bombardment

in recent months.

"We have not had access to the centre of Aleppo for quite

some time... It has got even more difficult in the last several

weeks for us to operate on the outskirts," she said.

(Editing by Sami Aboudi and Tom Pfeiffer)