The Guardian: Latest North Korea missile test ends South's talk of engagement - "For some diplomats there is a fear that mounting sanctions are not deterring Kim, and are only incentivising him to speed up his programme".
During Defense Secretary James Mattis's visit to his base, Gen. John Hyten, commander of U.S. Strategic Command, told reporters, "I'm assuming it was a hydrogen bomb".
Friday's launch followed North Korea's sixth nuclear test on September 3 in what it described as a detonation of a thermonuclear weapon built for its developmental ICBMs.
The survey has a 95 percent confidence level with a margin of error of plus or minus four percentage points.
Kim has threatened Guam, a USA territory in the Pacific, and has fired missiles over Japan, a US ally. North Korean missiles can easily reach any part of Japan.
It is the latest barb traded between North Korea and the United States as the latter warns it has exhausted diplomatic options. The country flight-tested two intercontinental ballistic missiles in July.
China has traditionally been North Korea's closest global ally, although the North's repeated missile tests have hardened Beijing's line on the Kim regime.
"As recognized by the whole world, we have made all these achievements despite the United Nations sanctions that have lasted for decades", the agency quoted Kim as saying. "In addition to cutting off bilateral ties, I urge your government to support expelling the DPRK from the United Nations", the letter said.
National security adviser H.R. McMaster told ABC News' "This Week" that the "is going to say the United Nations can't be effective unless it reforms its bureaucracy and unless it achieves a higher degree of accountability for member states". However, the accuracy of the missile, still at an early stage of development, was low, it said. Among those who study the issue, there is a growing belief that the United States should focus on the fuel, either to halt it, if possible, or to take advantage of its volatile properties to slow the North's program. This is South Korean President Moon Jae-in.
Alarmed by North Korea's advancing weapons programs, many conservatives in South Korea have called for the reintroduction of USA tactical nuclear weapons in the South.
But inside the intelligence agencies and among a few on Capitol Hill who have studied the matter, the fuel is a source of fascination and is seen as a natural target for the USA effort to halt Kim's missile program.
Brexit, Fukushima, the USA elections, the Lehman collapse and the 9/11 attacks all saw bigger gains for the yen than on five out of six of North Korea's nuclear tests.
Information for this article was contributed by Darlene Superville and Jessica Gresko of The Associated Press; by David Nakamura, Anne Gearan and Carol Morello of The Washington Post; by Arit John, Mark Niquette, Susan Decker and Ben Brody of Bloomberg News; and by William J. Broad and David E. Sanger of The New York Times.