Washington DC, Oct. 5 -- US Secretary of State Marco Rubio has dismissed suggestions that the withdrawal of American long-range bombers from the UK's RAF Fairford was linked directly to a security threat, saying the movement of military assets was part of regular rotations and redeployments.

Speaking to reporters on Monday (local time) at Joint Base Andrews ahead of his departure for Iceland, Greece and Portugal, Rubio said the US Department of War was "constantly reallocating resources where they need to be", while also pointing to routine rotations.

"The Department of War is constantly reallocating resources where they need to be. There are regular rotations that happen as well," Rubio said.

When asked whether there was a threat, Rub...