"Kim Jong-un, the language that he has used: destroying not just parts of his neighbours but parts of the United States; his incipient ability to launch a nuclear-armed intercontinental ballistic missile – a threat of the kind the world has not known since the dawn of the atomic age," Johnson said in an interview with The Guardian released on Monday.
According to the diplomat, the approach implemented by US Secretary of State Rex Tillerson as for North Korea in order to reach international consensus has been "entirely right."
Johson added that China had the real possibility to contribute to the settlement of the crisis around the Korean Peninsula.
"In the end, the people who can really solve the problem are the Chinese… I think one of the reasons for being optimistic about the world generally is, there are places around the world where you can see the Chinese ability to play a positive role in global diplomacy, and increasing Chinese interest in doing that," the foreign secretary said.
The tensions around North Korea's nuclear program have remained high over the past year due to the country's repeated nuclear and ballistic missile tests, all of which were in violation of UN Security Council (UNSC) resolutions. As a response measure, the UNSC has introduced multiple sanctions against Pyongyang with the aim of hampering the development of its nuclear program.