You make an interesting point. Halachah and traditional rabbinical learning don't provide a very sophisticated guide on issues such as political philosophy or relations between states. There is certainly nothing in Judaism to compare with the subtelty or comprehensivenes of, says, the Catholic concept of a 'Just War' (however much Catholics may have ignored this concept down the centuries). All this is very much in contrast with the rich web of rabbinical thought on issues such as matrimonial law, contract, property rights or human relations at the person to person level. It's interesting to ask why rabbanim, for all their learning, have not developed a modern(i.e. post-Temple), religious-based philosophy of politics, state power and international relations, to place alongside their contributions in other areas of law and ethics. More to come.....
Three Turkish soldiers killed, 14 wounded in PKK attack in southeast, army says (Reuters)
from the article: Time to attack