WASHINGTON, Oct 28 (Reuters) - Ukraine would not see any

new restrictions on the use of U.S. weapons against North Korean

forces should they enter the fight against Ukrainian forces, the

Pentagon said on Monday, as it estimated 10,000 North Korean

troops had been deployed to eastern Russia for training.

"A portion of those soldiers have already moved closer to

Ukraine, and we are increasingly concerned that Russia intends

to use these soldiers in combat or to support combat operations

against Ukrainian forces in Russia's Kursk Oblast near the

border with Ukraine," said Pentagon spokesperson Sabrina Singh.

NATO Secretary General Mark Rutte said earlier on Monday

that military units from North Korea have been deployed to

Russia's Kursk region, which Ukrainian forces grabbed in a

surprise summer offensive.

Singh declined to confirm North Korean forces were present

in Kursk.

"It is likely that they are moving in that direction towards

Kursk. But I don't have more details just yet," Singh said.