A loose coalition of countries that have joined , including Australia and Japan , have carried out naval exercises to practice for interdictions , and a few countries have already boarded ships to and from North Korea in ports throughout Asia .
Asia /location/location/contains North Korea
Asia /location/location/contains Japan
DT JJ NN IN NNS WDT VBP VBN , VBG NNP CC NNP , VBP VBN RP JJ NNS TO VB IN NNS , CC DT JJ NNS VBP RB VBN NNS TO CC IN NNP NNP IN NNS IN NNP .
Asia
LOCATION
North Korea
LOCATION
/location/location/contains
Asia
LOCATION
Japan
LOCATION
/location/location/contains