“The head of the US Air Force on Thursday said she would be “concerned” if President Barack Obama were to formally declare a “no-first-use” policy for America’s arsenal of nuclear weapons.

US media reports have in recent weeks said Obama is weighing an overhaul of long-standing nuclear policy, including by pledging to never conduct the first strike in a nuclear conflict.

“I would be concerned about such a policy,” Air Force Secretary Deborah Lee James told the New America think tank in Washington.”

US Air Force head ‘concerned’