However, the vice chairman of the US Joint Chiefs of Staff recently said the July 4 test stopped short of showing North Korea has the ability to strike the United States "with any degree of accuracy".
Both countries on Friday reiterated calls for China to use its influence over North Korea to get the pariah state to abandon its missile program.
The Security Council has already imposed six rounds of progressively tougher sanctions against North Korea, but so far that has failed to halt the country's rapidly advancing nuclear and ballistic missile programs.
The assessment was triggered by recent North Korean missile tests that indicated the nation's program was further along than expected.
The U.S. gave China a proposed resolution several weeks ago, and U.S. Ambassador Nikki Haley told reporters that China has been negotiating with its close ally Russian Federation on possible new sanctions.
Reports have speculated North Korea is gearing up to fire another missile in the coming days.
The latest threat follows reports USA intelligence officials believe North Korea will have the capacity to conduct an intercontinental nuclear missile strike within the next six months. But the North has not shown any response to Seoul's proposal.
Turkey, Germany Step Up War of Words
Turkish pro-coup officers being granted asylum in Germany have also added more strains to the two countries' relations. Germany's DIHK chambers of commerce said that in the current environment investing in Turkey was hard to imagine.
So I think for all of us, we should give Secretary Tillerson full support in attempting to resolve this diplomatically and economically even as we recognize that it may not happen, and there may have to be a follow-up option, which is the military option.
"We're constantly in touch with China".
Sending food aid to an adversarial nation spending billions of dollars to build nuclear weapons and long-range ballistic missiles, in defiance of U.N. resolutions banning such development, is also a controversial issue.
Russian Federation has questioned whether the missile actually was an ICBM, though China did not. "Whether they are willing to put it in writing or not is going to be the real question", Haley said.
"And I do not think that for the objective of working out a resolution you need really to go to the technical nitty gritties of things", he said.
Servicemen from North Korea's military have vowed their firm readiness to fight with the United States ahead of the 64th anniversary of the armistice that ended the 1950-53 Korean War, Pyongyang's state media said Wednesday.
Russian Federation and China, which is North Korea's closest ally and accounted for almost 90 percent of its $6 billion trade previous year, urged restraint and renewed dialogue in a joint statement after the missile test. Kim boasted he'd send more "gifts" to the USA, which held joint drills with South Korea in response.