As tensions between the United States and North Korea continue to grow again after a quiet 2018, North Koreans are on track to set a new record for most successful missile test within a year. In 2019 so far, only one test failed and 19 were successful, according to the North Korea Missile Test Database by the Nuclear Threat Initiative. The number of successful tests in 2019 is the same as for 2014, when 19 successful tests were carried out and none failed.
After two summits between North Korean leader Kim Jong-un and U.S. President Trump in 2018 and early 2019 brought no concrete results, rhetoric between the two nations has once again grown heated. North Korea has repeatedly threatened escalation and the U.S. and South Korea even cancelled a joint military excercise to appease their foe.
In 2016 and 2017, North Korean missile tests were less successful: 24 tests were carried out in 2016 - 14 were successful and 10 resulted in failure. 2017 still saw six out of 20 North Korean missile tests fail.