Ouch. I'm not sure where you're getting this info. Holland is an ally of ours that has been heavily involved in the Iraq and Afghanistan wars and is involved in various peace-keeping missions. Holland is a peaceful nation but not a cowardly one. The PM stated more than you wrote and at the time he was quoted, it was soon after the tragedy occurred. What was he supposed to do? Start screaming for war before he even knew what had happened?
Regardless, if you are demanding that the Dutch react angrily or violently or hate their PM if he doesn't call for war or make inflammatory statements, you will be disappointed. The Dutch are steadfast regarding justice but are not a vengeful people:
"Asked how they felt the Dutch government should react to the tragedy, Van den Akker said: "What happened was awful, and we are all thinking of the victims. But we are not going to call for the government to go and catch the perpetrators or go to war. We are not America.""
http://www.theguardian.com/world/2014/jul/18/dutch-travellers-react-calmly-loss-flight-mh17