North Korean leader Kim Jong Un visits a submarine factory in an undisclosed location, North Korea, in this undated picture released by North Korea's Central News Agency (KCNA) on July 23, 2019. KCNA via REUTERS

A day after two North Korean missile launches rattled Asia, the nation announced Friday that it had tested a ''new-type tactical guided weapon'' that was meant to be a ''solemn warning'' about South Korean weapons development and its rival's plans to hold military exercises.

The message in the country's state media quoted North Korean leader Kim Jong Un and was directed at ''South Korean military warmongers.'' It comes as U.S. and North Korean officials struggle to set up talks after a recent meeting on the Korean border between Kim and U.S. President Donald Trump seemed to provide a step forward in stalled nuclear negotiations.

Although the North had harsh words for South Korea, the statement stayed away from the kind of belligerent attacks on the United States that have marked past announcements, a possible signal that it's interested in keeping diplomacy alive.

It made clear, however, that North Korea is infuriated over U.S.-South Korean plans to hold military drills this summer that the North says are rehearsals for an invasion and proof of the allies' hostility to Pyongyang.

The message was gloating at times, saying the test ''must have given uneasiness and agony to some targeted forces enough as it intended.''

South Korean Defense Ministry spokeswoman Choi Hyunsoo on Thursday urged the North to stop acts that are ''not helpful to efforts to ease military tensions on the Korean Peninsula.''

The North's firing of what the South called a new type of short-range ballistic missile in two launches into the sea Thursday was its first weapons launches in more than two months.

North Korea fired two short-range missiles from Wonsan, Gangwon Province, into the East Sea on Thursday morning, according to South Korea's Joint Chiefs of Staff. In the photo released by North Korean state-run Korean Central Television (KCTV), a North Korean missile is being launched from a transporter erector launcher on May 9, 2019. KCTV-Yonhap

The South's Joint Chiefs of Staff said the missiles were fired from near the eastern coastal town of Wonsan and flew about 430 kilometers (270 miles) and 690 kilometers (430 miles), respectively, before landing off the country's east coast.

A South Korean defense official, requesting anonymity because of department rules, said an initial analysis showed both missiles were fired from mobile launchers and flew at a maximum altitude of 50 kilometers (30 miles).