but it originated around 450 miles away at China's main nuclear test site, known as Lop Nur, according to Christopher Yeaw, the assistant secretary for arms control and nonproliferation at the State Department. "There is very little possibility that it is anything other than an explosion, a singular explosion," Yeaw said at an event hosted Tuesday by the Hudson Institute, a conservative think tank in Washington, D.C. "It is quite consistent with what you would expect from a nuclear explosive test."
Japan estimates that the missiles reached a maximum altitude of 80 kilometres (50 miles) and flew approximately 340 kilometres before landing near the east coast of the Korean Peninsula, outside Tokyo's exclusive economic zone. Early reports indicate that no damage has been reported by nearby aircraft or ships.
The major shift in the NDS lies in the shifting approach of the US Defense Department, which considers security of the homeland and Western Hemisphere its primary concern. The document noted that the US military would be guided by four central priorities: defend the homeland, push allies around the world away from reliance on the US military, strengthen defence industrial bases and deter China as opposed to a policy of containment.
Taiwan's President Lai Ching-te has spent his first year in office warning that time is running out to prepare for a possible conflict with China. In the past two months alone, he has proposed a sweeping special defense budget and backed a landmark $11 billion U.S. weapons purchase meant to strengthen the island's deterrence. But his commitments are colliding with Taiwan's domestic political reality.
South Korea hosts about 28,500 US troops in combined defence against North Korea's military threat and Seoul has raised its defence budget by 7.5% for this year. South Korea is capable of taking primary responsibility for deterring North Korea with critical but more limited US support, said the National Defense Strategy, a document that guides the Pentagon's policies. This shift in the balance of responsibility is consistent with America's interest in updating US force posture on the Korean Peninsula, the document added.
China's drive to modernize its military to rival the US armed forces is running parallel with an aggressive purge of its senior leaders. The People's Liberation Army has been repeatedly shaken by a massive anti-corruption campaign led by Chinese leader Xi Jinping. Now, the military leadership is under renewed scrutiny after one of China's most senior generals was placed under investigation.