WASHINGTON — Despite a drumbeat of increasingly bellicose threats from North Korea, the White House said Monday that there was no evidence that the country’s leader, Kim Jong-un, was mobilizing troops or other military forces for any imminent attack.

Though American officials said they remained concerned about the invective flowing from North Korea — and South Korea’s president ordered military commanders to carry out a swift and strong response to any provocations — the Obama administration took pains to emphasize the “disconnect” between Mr. Kim’s “rhetoric and action.”

The White House’s strategy, officials said, was calculated to ease tensions after a fraught few days in which Mr. Kim threatened to rain missiles on the American mainland and the United States responded by flying nuclear-capable bombers over the Korean Peninsula.

“We are not seeing changes to the North Korean military posture such as large-scale mobilizations or positioning of forces,” said Jay Carney, the White House press secretary. “What that disconnect between rhetoric and action means, I’ll leave to the analysts to judge.”