SEOUL, South Korea (AP) — North Korea said Friday it had test-fired a newly developed anti-aircraft missile in the fourth round of weapons firings in recent weeks, even as it pushes to reopen dormant communication channels with South Korea in a small reconciliation step. Earlier this week, North Korea leader Kim Jong Un expressed his willingness to restore communication hotlines with South Korea in coming days to promote peace on the Korean Peninsula. Some experts say North Korea wants South Korea to persuade the United States to ease punishing economic international sanctions on it. Other say North Korea aims to get an international recognition as a nuclear power. Earlier in September, North Korea also test-fired a new hypersonic missile, a newly developed cruise missile and a ballistic missile launched from a train.