Time to free the world from war and counter global warming

As US President Barack Obama accepted the Nobel Peace Prize justifying the war in Afghanistan and the UK government allocated billions to that conflict in the same week as world leaders discussed the threat of global warming in Copenhagen, the question arises as to why war always triumphs over development.
It is surely time to recall the words of a former US President President Dwight Eisenhower who declared that “every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed. This world in arms is not spending money alone. It is spending the sweat of its labourers, the genius of its scientists, the hopes of its children...This is not a way of life at all, in any true sense. Under the cloud of threatening war, it is humanity hanging from a cross of iron.” When will humanity come down from this cross and start dedicating resources to development and countering the real threats that face our planet like global warming?