The United States, meanwhile, staged another show of force meant to deter any North Korean aggression by flying two B-1B supersonic bombers Tuesday night from an air base in the USA territory of Guam to the South for drills with South Korean fighter jets.
Rep. Lee Cheol-hee, a lawmaker for the ruling Democratic Party who sits on the National Defense Committee, said defense sources told him that North Korean hackers previous year stole the classified U.S.
The warplanes first conducted a simulated air-to-ground missile drill over the waters east of the Korean Peninsula and then flew over South Korea and conducted the same drill over the waters west of the peninsula, the South Korean military said.
According to Reuters, North Korea has launched two missiles over Japan and conducted its sixth nuclear test in recent weeks as it fast advances toward its goal of developing a nuclear-tipped missile capable of hitting the USA mainland.
In addition to the missile tests, it has conducted six nuclear tests since 2006, including the most powerful one on September 3.
Trump has engaged in an escalating war of words with North Korean dictator Kim Jong-Un amid rising tensions between the two countries.
The move came as North Korea hinted last week that it resumed the operation of the Kaesong Industrial Complex without consent from South Korean firms, which had to leave their properties behind there due to the park's closure in 2016.
USA and South Korean wartime operational plans, including a plan to wipe out the North Korean leadership, were stolen by North Korean hackers past year, a South Korean ruling party lawmaker said on Wednesday.
President Trump has "lit the wick of war", North Korean Foreign Minister Ri Yong Ho says.
Australia's recent denial of entry for North Korean soccer players is also in line with the stance, the foreign minister said, referring to her decision not to issue visas for a North Korean soccer team seeking to participate in next month's qualifying matches for the Asian Football Confederation under-19 championships, originally set to take place in the country.
It remains unclear whether North Korea is holding official celebrations for the party anniversary or if its leader Kim Jong-Un is making any public appearances for the occasion.
While the new measures also include limitations on the sale of refined petroleum products and crude oil, European Union member states will not provide new work permits to North Korean nationals.
In his latest tweet over the weekend, Trump reiterated that diplomatic efforts with North Korea have consistently failed, adding that "only one thing will work".
Fears the crisis could spiral into open conflict have risen as the communist state demonstrated rapid progress in its efforts to develop a nuclear-tipped missile that could target the USA mainland despite several rounds of punishing United Nations and other global sanctions against it.
In a surprising sign of weakness, the commentary also says that if North Atlantic Treaty Organisation would join the United States in the Korean Peninsula it would "change the balance of forces" against it. There were even concerns that North Korea prepped hundreds of computers for a massive attack on its southern neighbor.
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