If he weren't a liar
Japan's Self Defense Forces (Jieitai) have often been appreciated for their rescue operations after natural disasters happening in Japan. Their activities after the Niigata earthquake is one of the examples.
Prime Minister Koizumi says that Japan has sent SDF to Iraq, not because the USA wants it, but because it is necessary for helping Iraqi people rebuild their country after the war. He has been trying to persuade people by saying that it is merely for "international contributions" and "humanitarian assistance."
If he really meant it, then why wouldn't he think of sending SDF to the Asian countries that are suffering damages caused by the tsunami after the big earthquake?