North Korea's ongoing negotiations with Seoul have also run into a hurdle this month, with the state-run Korean Central News Agency (KCNA) on Saturday demanding South Korea repatriate a group of North Korean restaurant workers thought to have defected across the border.
Speaking on Friday alongside Pompeo, Haley called the passing of three massive sanctions resolutions against North Korea a year ago a "Herculean task" that brought North Korea to the table.
On reasons for suing, the family members said Kim has decried their search to find the truth as "pro-North Korean" several times on conservative cable channels and Internet news media while refusing to meet them.
The rift between the U.S. and North Korea remains wide.
The steep economic downturn comes as analysts highlight the need for the isolated country to shift towards economic development, moves that were announced by leader Kim Jong-un in April. President Trump has repeatedly, and publicly said his aides had good talks with North Korea and that Pyongyang promised to abandon its nuclear weapons.
China, its biggest trading partner, enforced sanctions strictly in the second half of 2017, hurting North Korea's manufacturing sector.
"President Trump I think had great expectations. he looked at this is sort of like, 'if I can establish friendly relations with Kim Jong Un, then things will work out, '" Chang told Monday's "The Brett Winterble Show". "We all know it's going forward".
Abe is also committed to resolving a bitter dispute over more than a dozen Japanese citizens who were abducted by North Korean agents in the 1970s and '80s.
Graham said this should be done by giving a "real, stern warning" to the North through restarting the halted joint-military exercises with South Korea and setting deadlines on the North's return of America's fallen Korean War heroes.
Dutch Ambassador Karel Van Oosterom said the Security Council made clear to Pompeo that it wants to see "concrete actions and deeds" from North Korea to denuclearize.
"Given that the South Korean government also has an obligation to carry out what was agreed upon in the Panmunjom Declaration, it should not sit idle on the issue of declaring an end to the war", Uriminzokkiri, the North's external propaganda website, argued Monday.
"This would make it hard for them to actively rejoin the US' maximum pressure campaign, including Trump's renewed economic sanctions on North Korea, not to mention support USA military action".