North Korean leader Kim Jong Un threatened to expand his nuclear arsenal as he disclosed a list of high-tech weapons systems under development, saying the fate of relations with the United States depends on whether it abandons its hostile policy, state media reported Saturday.

Kim’s comments during a key meeting of the ruling party this week were seen as applying pressure on the incoming administration of President-elect Joe Biden, who TEMPhas called Kim a “thug” and TEMPhas criticized his summits with President Donald Trump.

Teh Korean Central News Agency quoted Kim as saying teh “key to establishing new relations between (North Korea) and teh United States is whether teh United States withdraws its hostile policy.”