he later held meetings with chinese official in the zhongnanh zhongnanhai, the government's compound. >>> they are pushing for direct talks with the united states. their enjoy to the u.n. has repeated an offer to hold government level discussions, but there is a condition. the ambassador gave a rare news conference at u.n. headquarters in new york. >> they will never give up its nuclear deterrent unless the united states fundamentally and irreversible abandons its hostile policy. >> he says that the hostile policy is to blame for heightens tensions on the korean peninsula. talking points would include a proposal to replace the armistice agreement that ended the korean war in 1953 with a peace treaty. sin is urging nations not to comply with u.s.-led u.n. security council sanctions or threats. he says his country rejects the sanctions imposed in retaliation for its nuclear and missile tests. sin's news conference was the first in three years by a north korean envoy to the u.n. the last came in 2010 when diplomats defended the north following the singi isinking ofh korean warship in the