President Trump struck an upbeat, yet cautious tone about Kim Jong Un after North Korea's latest missile launch early Saturday morning local time.

"Kim Jong Un has been pretty straight with me, I think, and we're going to see what's going on, we're going to see what's happening," Trump said to reporters in Washington, D.C., before boarding Air Force One for the G-7 summit in France Friday night.

"He likes testing missiles, but we never restricted short-range missiles. We'll see what happens," he added.

President Trump: "Kim Jong Un has been, you know, pretty straight with me I think. And we're going to see what's going on...He likes testing missiles." https://t.co/R9m4aahO3S pic.twitter.com/0r6IZPq1xw — The Hill (@thehill) August 24, 2019

Trump's remarks came just hours after North Korea fired two short-range ballistic missiles off its east coast into the Sea of Japan, the seventh such missile testing since Trump and Kim met in the Demilitarized Zone last month for discussions about restarting negotiations between Pyongyang and Washington.

Kim had expressed frustration that the U.S. continued to conduct joint military exercises with South Korea, which North Korea described as a "rehearsal for war." The countries ended their military drills this week, but North Korea continued to fire ballistic missiles into the sea, which South Korean officials said caused "grave concern."

"Our military is monitoring the situation in case of additional launches and maintaining a readiness posture," South Korea's Joint Chiefs of Staff said in a statement.

In a statement, the South Korean presidential office demanded that North Korea cease its missile testing to deescalate tensions in the region and echoed its call for talks to resume between Pyongyang and Washington.