now let's bring back hiroki.he north koreans announced on december 10th that it would extend the period for launching, what it calls a satellite-carrying rocket, by one week. they ignored all criticism from the international community and went ahead. why is that? >> well, i think one of the reasons is that it's a message to the united states. the two sides met in beijing in february. the americans offered humanitarian aid in exchange for the north freezing its missile development. but the north koreans, nonetheless, launched a missile in april. the talks have been stalled ever since. before president obama enters his second term, officials in pyongyang want the americans to recognize their challenge such as the middle east and afghanistan. another reason it's related to south korea's presidential election scheduled on december 19th. the north koreans hope that the new government will return. they have criticized the conservative candidate for her stance on relations. the missile launch can be seen as a way of pus