US Secretary of State Rex Tillerson has stated that Washington is doing everything to force North Korea to sit at the nuclear disarmament negotiating table, reported Agence France-Presse (AFP) news agency.

In his words, if diplomacy and sanctions do not succeed and US Armed Forces will be obligated to take preventive measures, this will be his personal failure.

Tillerson added that they can only contribute, and the regime in Pyongyang must decide its future.