North Korean leader Kim Jong-un pays tribute to his father Kim Jong-il at the Kumsusan Palace of the Sun on December 17, 2017. (Photo: Baomoi.com)

Kim was quoted by the Korean Central News Agency during his visit to a Pyongyang mausoleum to pay tribute to his father, on the sixth anniversary of his death.  

Rodong Shinmun, a newspaper published by the ruling Workers' Party of Korea, released an article saying that North Korea will not be overpowered by the international community, and called on people to unite under the leadership of  Kim Jong-un.

The article said Korea is developing despite the sanctions imposed by the US and its allies and praised the new achievements in North Korea’s nuclear program.