Defense Intelligence Agency analysts suspect North Korea has produced a dozen nuclear weapons since President Trump and North Korean leader Kim Jong Un met in Singapore last year.

The meeting was the first of two summits between the leaders to discuss the nuclear disarmament of North Korea. Trump and Kim also met for a third time at the demilitarized zone last month.

The analysts estimated North Korea could have between 20 and 60 nuclear bombs, the Wall Street Journal reported Friday.

Since their first summit in June 2018, Trump has downplayed concerns that North Korea has continued its nuclear weapons program, saying in a recent interview that Kim “promised” he wouldn’t develop the program further.

North Korea tested two missiles on Thursday, calling it a “solemn warning” against “South Korean warmongers.” The short-range missiles were fired into the Sea of Japan from North Korea’s east coast. The comments follow the refusal of the U.S. and South Korea to cancel annual military exercises.

UPDATE: The Wall Street Journal on Saturday issued a correction to its story, writing, "A previous version of this article incorrectly stated that analysts at the U.S. Defense Intelligence Agency said North Korea could have produced 12 nuclear weapons since the Trump-Kim handshake in Singapore in June 2018."