The US has some \u201csome hard work\u201d to do with North Korea before President Donald Trump meets Kim Jong Un in Vietnam later this month, according to its special envoy Stephen Biegun. Trump is "very much looking forward to taking the next steps," according to a pool transcript of Biegun\u2019s remarks on Saturday. The envoy on North Korea spent three days negotiating with officials in Pyongyang before meeting with South Korean Foreign Minister Kang Kyung-wha in Seoul. "I\u2019m confident that if both sides stay committed we can make real progress here," Biegun said. "We don\u2019t know where it\u2019s going to go but we are in the midst of a conversation with the North and our discussions were productive." Biegun didn\u2019t say exactly what steps were left to take with North Korea. The State Department earlier said Biegun and his North Korean counterpart agreed to meet again in advance of the Trump-Kim summit. Trump tweeted shortly before Biegun met with Kang that he would hold his second summit with the North Korean leader in the Vietnamese capital of Hanoi on Feb. 27 and 28. In a second tweet, Trump praised Kim as a leader who would turn North Korea into a \u201cgreat Economic Powerhouse.\u201d North Korea\u2019s official Korean Central News Agency separately said earlier Saturday that Kim visited the defense ministry on Friday to commemorate the founding of the Korean People\u2019s Army and called on the military to play a substantial role in developing the economy.