The stolen data, allegedly estimated to be around 235 GB, also includes secret Seoul-Washington war plans that detail procedures on how to handle an all-out war with Pyongyang and "decapitate" Kim Jong-un's leadership.
The last flight by United States bombers was 17 days earlier when four US F-35B stealth fighter jets and two B-1Bs flew over the peninsula.
Those are the findings of a poll by the Associated Press-NORC Center for Public Affairs Research, as tensions between the adversaries escalate and North Korea comes closer to its goal of having a nuclear-tipped missile that could strike the continental U.S. In August, Pyongyang threatened to fire intermediate-range missiles towards the vicinity of Guam, a U.S. Pacific territory that is frequently subjected to sabre-rattling from the North. The two are in South Korea for talks with top officials on Friday.
Global investors may adjust their portfolios by exiting their capital from South Korea in case of a prolonged security risk on the Korean Peninsula, a central bank monetary board member said Tuesday.
The B-1Bs also conducted exercises with Japan's Air Force in what the USA statement called a "sequenced bilateral mission".More news: Jimmy Kimmel takes aim at Trump threatening NBC's license
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Commenting on a Trump statement that the United States might withdraw from a nuclear deal with Iran, Peskov said such a move would have "negative consequences".
South Korea's 10-year bond yields have gone from a low of 2.105 percent in June to a two-year high of 2.435 percent on September 28 amid wider geopolitical concerns about the Korean peninsula.
While the former involved procedures on handling an all-out war with North Korea, the latter involved Seoul's plan on how to respond to North Korea's localised provocation or commando infiltration, Yonhap reported.
He said in October that "only one thing will work" in relation to North Korea. North Korea needs time and proof to believe that abandoning its nuclear programme will contribute to its own political and economic advantage. "The Korean War is still alive in the minds of many people".
Bishop said Australia supports what she called "the tough sets of comprehensive sanctions" against North Korea, saying the North "will be deterred from carrying out any further illegal test" and "will be compelled to return to the negotiating table".