North Korea may have expanded its nuclear arsenal with 12 more bombs since President Donald Trump and North Korean leader Kim Jong Un first met at a Singapore summit last year.

First reported by the Wall Street Journal, intelligence analysts have concluded that the secretive state is accelerating its production of long-range missiles and fissile material, both key components in making nuclear weapons.

Analysts have reportedly pored over satellite imagery to discover the movement of shipping containers and trucks at crucial weapons facilities in the northern part of the country. These same analysts estimate Pyongyang now has between 20-60 nuclear weapons.

The reports come as North Korea recently fired two-short range missiles off its coast, flouting a UN ban on such testing. The hermit kingdom has also unveiled a new submarine with possible nuclear launch capabilities.

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