North Korean leader Kim Jong-un orders development of new intercontinental ballistic missiles with nuclear counterattack capability and massive production of tactical nuclear weapons at a key meeting of ruling Workers' Party.
President Recep Tayyip Erdogan also criticised the US for giving support and weapons to terrorist organisations in northern Syria.
The ballistic missile has been estimated to have hit a maximum altitude of 2,000 kilometres and flown around 800 kilometres for half an hour, Seoul's military said.
North Korea's leader Kim Jong-un personally oversaw the successful launch of the hypersonic missile, the state media said, in a second such test in less than a week.
Restoration of an inter-Korean hotline comes three days after Pyongyang test-fired a newly developed anti-aircraft missile in the fourth round of weapons firings in recent weeks.
Seoul tested a domestically built submarine-launched ballistic missile hours after rival North Korea fired two ballistic missiles toward the sea.
Nuclear envoys from Japan, South Korea and the US hold talks a day after Pyongyang tested a long-range missile.
The DPRK fired its highest-ever intercontinental ballistic missile reaching an altitude of 4,475 kilometres (2,781 miles).
North Korea on Saturday conducted another successful test of an intercontinental ballistic missile that proved its ability to strike the US mainland, drawing a sharp warning from Trump and a rebuke from China.
China, Pyongyang's main economic and diplomatic ally, opposes any military intervention and calls for a resolution through dialogue.
South Korea and Japan called emergency meetings of top officials after the missile launch off North Korea's east coast.
US warned not to "disregard the reality that its mainland and Pacific operation region are in the DPRK's range for a strike," North's official news agency quotes Kim Jong-un.
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