North Korean leader Kim Jong-un has overseen the testing of a newly developed ultramodern tactical weapon. The Pyongyang's state media reported that the test was successful but did not specify the type of device involved. <br />''<br />''<br />''This is North Korea's first official report of a weapons test since it began a diplomatic process with Washington over its nuclear and missile programme. Hours after the report, the US State Department said it was confident the process remained on track. <br />'' <br />''North Korea's suspension of testing for nuclear weapons and ballistic missiles has been key to this year's rapid diplomatic developments and North Korean-US negotiations and has been repeatedly praised by President Donald Trump.<br />'' <br />''Trump and Kim met in a historic summit in Singapore in June, where they signed a vaguely worded document on denuclearisation of the peninsula.<br />''<br />''<br />''<span style="color: #222222;">In a summit in June Mr Kim and US President Donald Trump agreed the Korean peninsula should denuclearise, but a detailed plan was never set out.</span><br />