A "diplomatic source" tells the South Korean newspaper Joongang Ilbo that Donald Trump should have received another letter, the second letter, from Kim Jong-Un, writes the news agency Reuters, and The Guardian.

Donald Trump should have received the letter in the third week in August, and it is reported to be dated before North Korea's latest robot test last week. It was North Korea's fifth robot test in no time.

In the second letter, Jong-Un is said to have spoken of his desire to meet with Trump to discuss the nuclear issue on the Korean Peninsula.

As early as June, Donald Trump said he had received a "very beautiful letter" from Kim. It should have been the first letter from Kim after the talks broke down in February 2019.

Since then, North Korea has fired several short-range robots.

Summit

The last summit, the second in history, between the United States and North Korea took place in February 2019 in Vietnam's capital Hanoi. The meeting was canceled prematurely after Trump left the talks and went home.

After that, they met as quickly as possible at the standstill line between North and South Korea in June. There is no formal border between the countries as there is no peace between them. At that time there were no negotiations on nuclear weapons between the leaders.

History's first summit between the US and North Korea was held in June 2018 in Singapore. After that meeting, Trump said that North Korea was "no longer a nuclear threat."

US President Donald Trump and North Korea's dictator Jong-Un when they met in the demilitarized zone between North and South Korea on June 30, 2019. Photo: AP / Susan Walsh

More nuclear weapons

But North Korea has expanded its nuclear arsenal during the talks between Trump and Kim, according to a report this summer from Stockholm's International Peace Research Institute Sipri, which SVT News previously reported.

North Korean robot test shown in state television KRT on August 11, 2019. Photo: KRT via AP

One week ago, CNN reported that North Korea has been testing gaps in the US, South Korea and Japan's air defenses for the first time. This was done recently by a test of a short-range robot. North Korea is said to have tried to find weaknesses in the Allied countries' air defense systems Thaad and Patriot. It is not officially confirmed by any country.

Before North Korea's latest series of robot tests began in May this year, North Korea had not fired robots since November 2017.