In this undated photo provided on Tuesday, July 23, 2019, by the North Korean government, North Korean leader Kim Jong Un, center, speaks while inspecting a newly built submarine to be deployed soon, at an unknown location in North Korea. North Korean state media
In this undated photo provided on Tuesday, July 23, 2019, by the North Korean government, North Korean leader Kim Jong Un, center, speaks while inspecting a newly built submarine to be deployed soon, at an unknown location in North Korea. North Korean state media's report on Tuesday comes days after North Korea said it may lift its 20-month suspension of nuclear and missile tests to protest expected military drills between the United States and South Korea. Independent journalists were not given access to cover the event depicted in this image distributed by the North Korean government. The content of this image is as provided and cannot be independently verified. Korean language watermark on image as provided by source reads: "KCNA" which is the abbreviation for Korean Central News Agency. (Korean Central News Agency/Korea News Service via AP)
PHOTO: Korean Central News Agency/Korea News Service
Now playing
01:28
North Korea fires two unidentified projectiles
Now playing
02:23
Tropical activity poses threat in Southern Hemisphere
PHOTO: Indonesia Search and Rescue Agency
Now playing
02:09
Woman who is trapped underneath earthquake's rubble captured on video
Barrie
Barrie's aunt speaks about how the police brought her the news about the death of her nephew Ibrahima.
PHOTO: VTM
Now playing
01:26
Aunt of Black man who died after arrest in Belgium: We want justice
screengrab US social media
screengrab US social media
PHOTO: Getty Images
Now playing
04:35
Tech companies ban Trump, but not other problematic leaders
Now playing
01:23
Rejected Tintin cover breaks world record for comic book art
WASHINGTON, DC - JANUARY 13:  Speaker of the House Nancy Pelosi (D-CA) presides over the vote to impeach U.S. President Donald Trump for the second time in little over a year in the House Chamber of the U.S. Capitol January 13, 2021 in Washington, DC. The House voted to impeach Trump on the charge of "incitement of insurrection," 232-197 after a mob of his supporters attacked the U.S. Capitol where Congress was working to certify the Electoral College victory of President-elect Joe Biden on January 6. 10 Republicans voted to impeach. (Photo by Chip Somodevilla/Getty Images)
WASHINGTON, DC - JANUARY 13: Speaker of the House Nancy Pelosi (D-CA) presides over the vote to impeach U.S. President Donald Trump for the second time in little over a year in the House Chamber of the U.S. Capitol January 13, 2021 in Washington, DC. The House voted to impeach Trump on the charge of "incitement of insurrection," 232-197 after a mob of his supporters attacked the U.S. Capitol where Congress was working to certify the Electoral College victory of President-elect Joe Biden on January 6. 10 Republicans voted to impeach. (Photo by Chip Somodevilla/Getty Images)
PHOTO: Chip Somodevilla/Getty Images
Now playing
02:35
How the world is reacting to Trump's second impeachment
Indonesia sriwijay air crash search for victims wang pkg intl hnk vpx_00000920.png
Indonesia sriwijay air crash search for victims wang pkg intl hnk vpx_00000920.png
Now playing
02:21
Family members wait in anguish as search for crash victims continues
africa china coronavirus vaccine diplomacy lu stout pkg vpx _00025522.png
africa china coronavirus vaccine diplomacy lu stout pkg vpx _00025522.png
PHOTO: CCTV
Now playing
03:09
How China is hoping to use its vaccine as a diplomatic tool
PHOTO: CIRO FUSCO/AFP/ANSA/AFP via Getty Images
Now playing
00:38
Huge sinkhole appears in Italian hospital parking lot
TOPSHOT - Rescue workers carry recovered debris at the port in Jakarta on January 10, 2021, during the search operation for Sriwijaya Air flight SJY182 which crashed after takeoff from Jakarta on January 9. (Photo by Dany Krisnadhi / AFP) (Photo by DANY KRISNADHI/AFP via Getty Images)
TOPSHOT - Rescue workers carry recovered debris at the port in Jakarta on January 10, 2021, during the search operation for Sriwijaya Air flight SJY182 which crashed after takeoff from Jakarta on January 9. (Photo by Dany Krisnadhi / AFP) (Photo by DANY KRISNADHI/AFP via Getty Images)
PHOTO: Dany Krisnadhi/AFP/Getty Images
Now playing
02:16
Indonesian jetliner crashes after taking off from Jakarta
 HONG KONG PRO DEMOCRACY ACTIVIST VENTUS LAU BEING ESCORTED BY POLICE.
HONG KONG PRO DEMOCRACY ACTIVIST VENTUS LAU BEING ESCORTED BY POLICE.
PHOTO: VENTUS LAU FACEBOOK PAGE/Reuters
Now playing
03:15
See Hong Kong police arrest former pro-democracy lawmakers
Tensions between the United States and Iran are likely to further escalate once again after Tehran seized a South Korean-flagged chemical tanker in the Persian Gulf, according to semi-official Iranian news agencies, and announced it had resumed enriching uranium to 20% purity, far beyond the limits laid out in the 2015 nuclear deal. President Donald Trump walked away from the agreement in 2018. CNN
Tensions between the United States and Iran are likely to further escalate once again after Tehran seized a South Korean-flagged chemical tanker in the Persian Gulf, according to semi-official Iranian news agencies, and announced it had resumed enriching uranium to 20% purity, far beyond the limits laid out in the 2015 nuclear deal. President Donald Trump walked away from the agreement in 2018. CNN's Paula Hancocks reports.
PHOTO: YJC
Now playing
02:37
Footage shows chemical tanker seized by Iranian forces
A European health worker prepares a shot of the coronavirus vaccine.
A European health worker prepares a shot of the coronavirus vaccine.
PHOTO: Reuters
Now playing
02:14
Frustration in Europe over pace of coronavirus vaccine rollout
Jack Ma, the co-chair of the UN High-Level Panel on Digital Cooperation, founder of Alibaba Group, attends the Bund Summit in Shanghai. He says that the essence of finance is credit management. We must change the pawnshop idea of Finance and rely on the credit system. Shanghai, China, 24 October 2020.

Jack Ma, the co-chair of the UN High-Level Panel on Digital Cooperation, founder of Alibaba Group, attended the Bund Summit in Shanghai. He says that the essence of finance is credit management. We must change the pawnshop idea of Finance and rely on the credit system.No Use China. No Use France.
Jack Ma, the co-chair of the UN High-Level Panel on Digital Cooperation, founder of Alibaba Group, attends the Bund Summit in Shanghai. He says that the essence of finance is credit management. We must change the pawnshop idea of Finance and rely on the credit system. Shanghai, China, 24 October 2020. Jack Ma, the co-chair of the UN High-Level Panel on Digital Cooperation, founder of Alibaba Group, attended the Bund Summit in Shanghai. He says that the essence of finance is credit management. We must change the pawnshop idea of Finance and rely on the credit system.No Use China. No Use France.
PHOTO: Zhao Yun/Oriental Image/Reuters
Now playing
03:05
Chinese tech tycoon has not been seen in months
(CNN) —  

South Korea said that two projectiles launched by North Korea Thursday were a “new type of short-range missile” and posed a “military threat” which risked undermining the peace process on the Korean Peninsula.

Pyongyang fired two missiles early Thursday toward the East Sea, also known as the Sea of Japan. The first flew approximately 430 kilometers (265 miles), while the second flew 690 kilometers (428 miles), South Korean officials said.

The skies over the East Sea were the scene of a tense standoff this week between Japanese, South Korean, Russian and Chinese warplanes, emphasizing the uncertain nature of a region in which overlapping territorial claims and bullish militaries raise the risk of conflict, even without North Korea entering the mix.

South Korea’s Ministry of Defense said Seoul viewed Thursday’s launch “as a military threat and an action undermining efforts to alleviate tensions on the Korean Peninsula.”

“The government has been closely monitoring the relevant trends and is urging Pyongyang to suspend such activities that are not helpful for efforts to ease military tensions on the Korean Peninsula,” ministry spokesman Choi Hyun-soo said. “Going forward, the (South Korean) government will strengthen its monitoring in cooperation and close communication with the US.”

A senior US administration official told CNN that they are “aware of reports of a short-range projectile launched from North Korea” but declined to offer further comment.

Adam Mount, director of the Defense Posture Project with the Federation of American Scientists, said the emergence of a new type of short-range missile was concerning, as such devices are usually “thought of as a first-strike weapon.”

“If it’s very low and very fast, that shortens warning and decision time,” he told CNN. “Those kinds of things could be useful in a retaliatory situation, but it’s even more relevant for a first strike. That’s part of why we agreed to ban (Intermediate-Range Nuclear Forces) during the Cold War.”

First launches since Trump entered North Korea

Thursday’s launches come as US national security adviser John Bolton – a noted hawk on North Korea – visited South Korea this week to discuss bilateral strategic issues and just a few days after the North Koreans showcased photos of their leader Kim Jong Un inspecting what appeared to be a submarine, in another attempt to signal Pyongyang’s military capabilities.

They also follow President Donald Trump’s June meeting with Kim in the demilitarized zone and his brief foray into North Korea – a high-profile visit that has failed to yield any tangible signs of diplomatic progress toward the stated US goal of denuclearization.

“Trump’s trip to Panmunjom didn’t have its desired effect,” Vipin Narang, an associate professor of political science at MIT told CNN. “There’s no date for working level talks. Instead, they’re still testing – Kim is touring potentially nuclear capable submarines and firing” missiles.

Narang said that based on initial descriptions early Thursday, at least one of the projectiles was likely a solid-fuel ballistic missile that’s been jokingly dubbed the Kimskander, a portmanteau of Kim and the Iskander missile which experts say the North Korean weapon was likely based on.

North Korea conducted a similar launch in May, its first missile test since 2017, which served as a clear warning of Kim’s frustration at the state of talks with the US. Negotiations had been deadlocked since Trump walked out of their Vietnam summit early in February.

A satellite image obtained by CNN at the time captured the missile’s smoke trail.

Wednesday’s launch may have been North Korea’s response to the July 20 announcement that the US and South Korea will conduct joint military exercises as planned next month, in spite of Pyongyang’s argument that doing so would breach the agreement President Donald Trump made with Kim, according to Narang.

North Korea’s Foreign Ministry called the drills a “rehearsal of war” in a statement published last week in the country’s state-run news agency KCNA.

The statement also warned that North Korea could rethink its decision to stop testing nuclear weapons and intercontinental-range ballistic missiles (ICBMs) if the drills were to go ahead.

“Our discontinuation of the nuclear and ICBM tests and the US suspension of joint military exercises are, to all its intents and purposes, commitments made to improve bilateral relations. They are not a legal document inscribed on a paper,” North Korea’s Foreign Ministry said.

The US and South Korea regularly conduct joint military drills, but they suspended or scaled back a number of recent exercises part of an effort to ease tensions with Pyongyang.

’Tit for tat’

Speaking of the most recent launches, Narang said they were “no more provocative than before,” referring to similar tests Pyongyang conducted in May, “but still tit for tat.”

“Kim clearly believes that’s a violation of a personal commitment Trump made to him in Singapore,” where the US President said the US would drop joint military exercises with South Korea, he told CNN, adding that if the exercises continue, “all bets are off.”

“They are clearly signaling that this is a response or a foreshadowing of what might come,” Narang added.

Joel Wit, a senior fellow at the Stimson Center and director of 38 North, a website that tracks North Korea, agreed that Wednesday’s tests are probably not the last move Pyongyang will make.

North Korea is possibly assembling a series of responses “that show, you know, they’re tough guys,” he said.

The release of the photos of Kim inspecting the submarine was likely not a coincidence, Wit told CNN.

“It wasn’t an accident that someone took a picture of Kim standing in front of a submarine – that’s to show they’re tough guys they’re strong, they’re not going to buckle under to anyone.”

Wit urged a calm US response.

“I know a lot of people are going to say, ‘We should respond, we should go to the UN,’ but at this point, I don’t see much point in doing anything,” Wit said. “Going to the UN is just a dead end. It doesn’t hurt us at all to stay calm and not fly off the handle. They’ll test for whatever reasons they test, not because the Americans were tough on them.”

CNN’s Betsy Klein and Joshua Berlinger contributed reporting