After 25 years of trying to deal patiently with North Korea's nuclear and missile ambitions, Pence said, "all options are on the table" to deal with threat.
The Trump administration has declared a departure from the era of "strategic patience" in handling North Korea. "But meanwhile, we carry on normal economic exchanges and trade with all parties including North Korea", Lu said.
"We'll be conducting more missile tests on a weekly, monthly and yearly basis", he added.
Pence on Monday had traveled to the tense zone dividing the two Koreas, where he warned North Korea's leaders that after years of testing the US and South Korea with its nuclear ambitions, "the era of strategic patience is over". Pence told North Korea not to test Trump's resolve, saying "Just in the past two weeks, the world witnessed the strength and resolve of our new President in actions taken in Syria and Afghanistan".
Thornton said any new North Korean nuclear test "would draw a pretty significant worldwide response".
North Korea has threatened the U.S. with "all-out war" and announced that Pyongyang will continue to test missiles on a weekly basis.
So Pence struck a stern tone after arriving at a US naval base from South Korea.
Pence's advisers told reporters that he hopes to win better USA access to Japanese markets and to attract more Japanese investment in the U.S.
Townsend said it's important to remember China's strategic interests.
There has been recent criticism within China itself over Beijing's North Korea policy.
Global observers have warned that over the past decade North Korea has become adept at circumventing the United Nations sanctions, particularly so-called dual-use equipment that has both military and civilian applications. So China really does have tremendous leverage. Many Koreans were moved when the USA vice president made an unannounced visit to the Demilitarized Zone separating the two Koreas. "Trump is more impulsive and unpredictable than Kim Jong Un", he told viewers of his Sunday prime-time Vesti Nedelyi program, which earlier this year praised Trump for his pledge of warmer relations with Russian Federation.
China made a plea for a return to negotiations.
Foreign Ministry spokesman Lu Kang said tensions need to be eased on the Korean Peninsula to bring the escalating dispute to a peaceful resolution. It is vital for Korea and the U.S.to build on this alliance for regional stability.
The new forum for trade talks was launched by Trump and Abe during the Japanese leader's visit to the U.S.in February. "But dialogue for the sake of having dialogue is meaningless".
Abe also said Japan's government is drawing up contingency plans in case a crisis on the Korean Peninsula sends an influx of refugees to Japan. "We must see clearly that China and North Korea are no longer brothers in arms, and in the short term there's no possibility of an improvement in Chinese-North Korean relations".
This was disclosed by North Korea's deputy U.N. ambassador, Kim In Ryong, at a press event organized by the United Nations in NY on Monday, April 17, UK Guardian reports. South Korea hosts 28,500 US troops to counter the threat from the North.
Kim called the news conference to "categorically reject" the US decision to hold an open meeting of the U.N. Security Council on April 28. The meeting, scheduled to be chaired by Tillerson, will focus on North Korea's nuclear program.
"To some extent, we want to do for the United States what we did for IN", the White House adviser said. One called for "dual-track" talks on denuclearizing the Korean Peninsula and replacing the armistice that ended the 1950-53 Korean War with a formal peace treaty.
Shen Zihua, considered China's best-known historian on the Korean War, recently criticized North Korea in a speech that has not been censored by the Chinese government.
While some diplomatic efforts played out openly between Mr. Trump and Chinese President Xi Jinping, Townsend said "we also ought to expect there's covert and clandestine activity on both sides".