The BBC estimate was significantly higher than the most recent assessment by the NATO-led coalition.
“Diplomacy should (impose) reason on Kim’s reckless rhetoric and dangerous provocations,” Mattis said, referring to North Korean leader Kim Jong Un.
“The Nuclear Posture Review has not been completed and will ultimately be reviewed and approved by the President and the Secretary of Defence,” the Pentagon said in a statement.
As US-backed and Russian-backed forces battle to retake the remaining pockets of ISIS-held terrain, Mattis said the US military’s longer-term objective would be to prevent the return of an “ISIS 2.0.”
The threat from North Korea has grown to a “critical and imminent level” and the US, Japan and South Korea must address the matter, said the Japanese defence minister.
Politico said other senior Trump aides had also used private email accounts, including former chief of staff Reince Priebus, former chief strategist Steve Bannon and economic adviser Gary Cohn.
Though both are fighting ISIS, Moscow backs the Syrian government, whereas the US military backs a collection of Kurdish and Arab forces.
Ikaika Erik Kang, 34, an air traffic control specialist was arrested by the FBI following a year-long undercover probe for trying to spy for and aid ISIS.
The force management levels, put in place by Obama, are officially much less than the actual number of US forces in both Iraq and Syria.
The revelation that USS Carl Vinson was nowhere near North Korea at the time will hit the US administration’s credibility at a time of potential conflict.
The visit shows the far-reaching portfolio of Kushner, who is part of Trump’s innermost circle and has been given a wide range of domestic and foreign policy responsibilities
Proponents say it would provide US commanders on the ground greater flexibility to respond to unforeseen challenges on the battlefield.
Experts say Trump will face growing calls for a stiff military, diplomatic, economic, and perhaps also covert response to Russia after his inauguration.
Trump’s choice of James Mattis for defence secretary has been commended by both Republicans and Democrats.
“These limited self-defense strikes were conducted to protect our personnel, our ships and our freedom of navigation,” Pentagon spokesman Peter Cook said.
US deputy national security adviser Ben Rhodes said further Turkish targeting of the SDF would undermine efforts to forge a ‘united front’ against ISIS.
The Joint Combined Planning Cell previously had 45 personnel from which they were reduced to five. Those withdrawn were coordinating with the Saudi-led air campaign in Yemen.
ISIS attacks in Afghanistan persist despite the group’s shrinking territory in the country.
The goal is to put more pressure on the Taliban, who control or content more territory in Afghanistan than at any time since they were ousted in 2001.
The Taliban control or contest more territory in Afghanistan than at any time since they were ousted by a US-backed intervention in late 2001, and US officials have acknowledged the uneven performance of Afghan security forces.
The operation will also count on support from US-led coalition air strikes as well as from ground-based firing positions across the border in Turkey.
Obama’s trip to Vietnam, which borders China, underscored shared concerns about China’s growing military clout as Beijing aggressively advances sovereignty claims to the South China Sea.
Washington and its allies have agreed to do more in their campaign to defeat ISIS, but more risks lay ahead.
US Defence Secretary Ash Carter’s full-throated backing of Haider al-Abadi follows months of intense Iraqi political wrangling that has put the country on edge.
One general was among those singled out for disciplinary action, the officials said. The nonjudicial punishments include letters of reprimand, which could have a career-ending effect on the service members involved.
The US military on Wednesday released photos and videos of the incidents, which they called “unsafe and unprofessional”.