SEOUL: North Korea fired a suspected ballistic missile off its east coast on Wednesday, just hours before South Korean President Moon Jae-in attended a groundbreaking ceremony for a rail line he hopes will eventually connect the divided Korean peninsula. The first launch since October underscored leader Kim Jong Un’s New Year vow to bolster the military to counter an unstable international situation amid stalled talks with South Korea and the United States. The presumed missile was fired around 8:10 a.m. (2310 GMT) from an inland location over the east coast and into the sea, South Korea’s Joint Chiefs of Staff (JCS) said. A few hours later, Moon visited the South Korean east coastal city of Goseong near the border with the North, where he broke ground for a new rail line that he called “a stepping stone for peace and regional balance on the Korean Peninsula.” The apparent missile launch by the nuclear-armed North highlighted the challenges Moon faces in his push to achieve a diplomatic breakthrough before his five-year term ends in May. Reconnecting the two Koreas by rail was a centrepiece of meetings between Kim and Moon in 2018, but those efforts went nowhere as talks aimed at convincing North Korea to surrender its nuclear weapons in exchange for easing international sanctions faltered in 2019. Kim’s New Year speech made no mention of efforts by South Korea to restart stalled negotiations or offers by the United States to talk, though analysts noted that doesn’t mean he has closed the door on diplomacy. South Korea’s National Security Council convened an emergency meeting, expressing concern the launch “came at a time when internal and external stability is extremely important” and calling on North Korea to return to talks. Japan’s defence minister said the suspected ballistic missile had flown about 500 km (310 miles). “Since last year, North Korea has repeatedly launched missiles, which is very regrettable,” Japanese Prime Minister Fumio Kishida told reporters. United Nations Security Council resolutions ban all ballistic missile and nuclear tests by North Korea, and have imposed sanctions over the programmes. In state media summaries of a speech Kim gave ahead of the New Year, the North Korean leader did not specifically mention missiles or nuclear weapons, but said that national defence must be bolstered. For several weeks North Korean troops have been conducting winter exercises, South Korean military officials have said. “Our military is maintaining readiness posture in preparation for a possible additional launch while closely monitoring the situation in close cooperation with the United States,” the JCS said in a statement. Recent North Korean missile tests have often featured double or multiple launches. Since the start of the COVID-19 pandemic, North Korea has become even more isolated, imposing border lockdowns that have slowed trade to a trickle and choking off any in-person diplomatic engagements. It has also stuck to a self-imposed moratorium on testing its largest intercontinental ballistic missiles (ICBMs) or nuclear weapons. The last tests of ICBMs or a nuclear bomb were in 2017, before Kim met with then U.S. President Donald Trump. But Pyongyang has continued test firing a variety of new, short-range ballistic missiles, including one launched from a submarine in October, arguing it should not be penalized for developing weapons that other countries also wield.