Kim Jong Un upgraded security on the Chinese and Russian frontiers, blocking routes for smugglers and defectors 

North Korea claims to have tested a new solid-fuel intercontinental ballistic missile (ICBM), the Hwasong-18 

South Korean soldiers and a U.S. soldier stand guard in the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A South Korean soldier stands guard as the concrete border is seen in the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A media member takes a photograph of South Korean soldiers standing guard in the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A South Korean soldier stands guard in the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

South Korean soldiers stand guard in the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

Birds fly over a North Korean guard post at the propaganda village of Gijungdong in North Korea, in this picture taken near the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A North Korean soldier stands guard at a guard post at the propaganda village of Gijungdong in North Korea, in this picture taken near the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A view of a bird's nest at the propaganda village of Gijungdong in North Korea, in this picture taken near the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A South Korean soldier stands guard as the propaganda village of Gijungdong in North Korea is seen in the background, in this picture taken near the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A North Korean flag flutters at the propaganda village of Gijungdong in North Korea, in this picture taken near the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

A South Korean soldier stands guard as the propaganda village of Gijungdong in North Korea is seen in the background, in this picture taken near the truce village of Panmunjom inside the demilitarized zone (DMZ) separating the two Koreas, South Korea, February 7, 2023. REUTERS/Kim Hong-Ji 

North Korea fired a ballistic missile over Japan 

A North Korean looks through binoculars from an administrative building as U.S. Vice President Kamala Harris (not pictured) visits the demilitarized zone (DMZ) separating the two Koreas, as seen from Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris is briefed by a member of the military as they stand at the demarcation line facing North Korea in the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris is briefed by members of the military at a military operation post that overlooks North Korea at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

A North Korean looks through binoculars from an administrative building as U.S. Vice President Kamala Harris is briefed by a member of the military at the demarcation line in the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool TPX IMAGES OF THE DAY 

U.S. Vice President Kamala Harris is briefed by a member of the military at a military operation post as she peers into binoculars towards North Korea at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris is briefed by a member of the military at a military operation post at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris is briefed by a member of the military at a military operation post that overlooks North Korea at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris walks before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris speaks to the media before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris speaks to the media before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris walks before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris walks before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris speaks to the media before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris takes a selfie with soldiers before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool TPX IMAGES OF THE DAY 

U.S. Vice President Kamala Harris talks with a soldier at a conference room as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands at military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris gives a statement to the media as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris talks with soldiers at a conference room as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers and their families as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers before her departure from the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris talks with a soldier at a conference room as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands in a conference room as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris talks with a soldier at a conference room as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool TPX IMAGES OF THE DAY 

U.S. Vice President Kamala Harris meets soldiers as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands at military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

A soldiers on the North Korean side looks through binoculars as U.S. Vice President Kamala Harris (not pictured) visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

A soldiers on the North Korean side looks through binoculars as U.S. Vice President Kamala Harris visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands at military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands at military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris walks next to the demarcation line at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

A soldiers on the North Korean side looks through binoculars as U.S. Vice President Kamala Harris visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers and their families visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers and their families visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands next to the demarcation line at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris talks with a soldier in a conference room as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris stands next to the demarcation line at the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris gives a statement to the media as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris meets soldiers and their families visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris holds binoculars at the military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris uses binoculars at the military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris uses binoculars at the military observation post as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris gives a statement to the media as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool 

U.S. Vice President Kamala Harris speaks to soldiers as she visits the demilitarized zone (DMZ) separating the two Koreas, in Panmunjom, South Korea, September 29, 2022. REUTERS/Leah Millis/Pool