While the duration and scope of such a conflict would be hard to measure, North Korea remained an huge risk, Fordham said.
North Korea's tests have inched the country closer to producing nuclear-tipped weapons that could one day reach the American mainland.
In a statement, North Korea responded by calling the actions "state terrorism" and that the "chief culprit" involved in "cooking up the "sanctions resolution", be beaten to death with a stick fit for a rabid dog".
In its first official reaction to the sanctions resolution adopted Tuesday by the U.N. Security Council, North Korea's Foreign Ministry said Wednesday that the sanctions would only strengthen the country's resolve to pursue its nuclear weapons program "at a faster pace without the slightest diversion".
The seismic activity, they say, is a result of North Korea's sixth nuclear test September 3.
This week, analysts at 38 North, a monitoring service, said satellite images of North Korea's nuclear testing site showed the effects of the natural disaster caused by the most recent test, as well as preparations for "future underground nuclear testing".More news: Amla, Perera lead World XI T20 win over Pakistan
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"The adoption of heinous "sanctions resolution" hardens our faith that what we should depend on is only our self-defensive nuclear force", the statement said, stressing North Korea's resolve to accelerate nuclear and missile development.
While Japan's Prime Minister Shinzo Abe has refused to consider negotiations unless Pyongyang abandons its nuclear weapons programme, an MP had claimed that support was rising inside the governing Liberal Democratic party for possible engagement with the regime, said the report.
The blast sparked worldwide outrage, prompting the Security Council's resolution on Monday that backed the new sanctions against Kim Jong-Un's regime.
"In recent months at least the Chinese have not even been putting the statistics for oil exports to North Korea in their official records".
US President Donald Trump has vowed that North Korea will never be allowed to threaten the United States with a nuclear-tipped missile, but has also asked China to do more to rein in its neighbour. "If it proves it can live in peace, the world will live in peace with it", she said.
A stronger version proposed by Washington included a freeze on Kim Jong-un's assets, a complete ban on oil sales to the regime and a mandate for warships from any United Nations member state to inspect ships suspected of carrying contraband to or from North Korea and to use all necessary measures to carry out inspections.