ANKARA North Korea has pledged its "strongest response strategy" against the US during a key year-end party meeting, media reports said Sunday. The Central Committee of the Workers' Party of Korea convened from Monday to Friday, with North Korean leader Kim Jong-un presiding, the Yonhap News Agency quoted the Korean Central News Agency (KCNA). The meeting resulted in a resolution condemning the US and its allies for their military alliance of transforming into an "invasive nuclear military bloc.