Everything you need to know about the nuclear bomb North Korea has tested

North Korea’s fractious approach towards international relations has continued as the country conducted its sixth and most powerful nuclear test to date.

So, what do we know about the bomb?

How powerful was it?

It reportedly shook buildings in China and Russia.

Officials in Seoul put the magnitude at 5.7 while the US Geological Survey said it was a magnitude 6.3.

Measured on the Richter scale, earthquakes which are over magnitude 6 typically only occur globally a little over 100 times per year.

How does it compare?

The Korea Meteorological Administration, South Korea’s weather agency, has claimed the bomb was five to six times stronger than the North’s fifth test, which took place in September last year.

Where and when was it carried out?

North Korea’s state-run television broadcast a special bulletin on Sunday afternoon to announce the test.

It said leader Kim Jong Un attended a meeting of the ruling party’s presidium and signed the go-ahead order.

Where can the North fire missiles to?

What has the North said?

Pyongyang says its missile development is part of a defensive effort to build a viable nuclear deterrent that can target US cities.

What has been the reaction internationally?

Trump has talked tough over the North’s missile tests, including a comment that Pyongyang would see fire, fury and power unlike any the world had ever witnessed if it continued threats – and his latest reaction has continued in a similar vein.

Japan’s Prime Minister Shinzo Abe called the test “absolutely unacceptable”.

Meanwhile, French President Emmanuel Macron condemned “in the strongest possible terms” North Korea’s sixth nuclear test.

Macron said he “calls on the members of the United Nations Security Council to quickly react to this new violation by North Korea of international law”.

The Foreign Secretary said the UK’s view was that “peaceful diplomatic means” are the best way to resolve the crisis in the Korean peninsula.