I was wondering how you believe Islam affects the foreign policy of a country, if at all?
Following are some of the important guidelines Islam gives to the makers of foreign policy of a Muslim country:
1. No aggression should be launched against a non-Muslim country to forcibly make it accept Islam or to annex it.
2. All contracts with various countries must be honoured in all circumstances -- unless of course the other country breaks or revises them.
3. War can only be declared on another country, whether Muslim or non-Muslim, if that country is guilty of oppression and tyranny and diplomatic talks fail. Here again war does not become obligatory; it merely becomes permissible.
4. Friendly ties should be initiated with all the countries of the world whatever be their religion.
5. The enmity of some country should not stop a Muslim country from being fair and just towards that country.