Trump's remarks came hours after the State Department announced a postponement of Thursday's meeting between U.S. Secretary of State Mike Pompeo and Kim Yong Chol, a senior adviser to the North Korean leader.
The meeting, scheduled for this week in NY, she said, "will reconvene when our respective schedules permit".
Pyongyang accused Washington of derailing commitments made by North Korean leader Kim Jong Un and US President Donald Trump at their June summit in Singapore. He visited NY in May for talks with Pompeo in what was the highest-level trip by a North Korean to the United States in almost two decades.
Russian Federation said in October it was time to consider the possibility of relaxing the global restrictions against Pyongyang amid commitment expressed by North Korea's leadership to denuclearize of the Korean Peninsula.
Pyongyang, which has stopped the missile and atomic testing but has so far not taken any steps considered to be irreversible to dismantle its nuclear program, demands of the american counterparts to continue to advance.
Pompeo has traveled four times this year to North Korea, for decades a U.S. pariah, in hopes of securing an accord. The resolution also envisages restrictions on delivering industrial equipment, heavy equipment and transport to North Korea.
Trump has teased the possibility of a second summit with the young North Korean leader, saying last month that he expected the meeting would take place after Tuesday's midterms.
A tougher U.S. stance on North Korea could complicate South Korea's efforts to improve relations with North Korea and expand cross-border exchanges in line with progress on the denuclearization of North Korea.
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The statement did not threaten to end nuclear negotiations, however, and the North Koreans are said to still be pursuing a second summit between President Trump and Kim Jong Un.
Atwood also noted that North Korea's state-run news agency KCNA has recently put out aggressive messages saying the Kim regime only suspended its nuclear testing with the expectation that the US would begin easing sanctions.
North Korea's foreign ministry has warned that Pyongyang will "seriously" consider reviving its nuclear weapons program unless U.S. sanctions are lifted.
While Republicans maintained control of the Senate, the Democrats now have the opportunity to block Trump's agenda and open his administration to intense scrutiny.
It was not immediately clear whether Russian Federation was planning a new push to ease sanctions against North Korea.
"I think we have to look at it as a part of the process of reaching complete denuclearization and setting up a peace regime", the unnamed official told reporters.
Some analysts believe this weakened state could impact Trump's foreign policy and test his North Korean diplomatic gambit.
Ryder added that the Pentagon has already taken measures "to support Secretary Pompeo's efforts" like suspending large-scale joint drills with South Korea earlier this year.