You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
1973_oil_crisis

Context:
Some of the income was dispensed in the form of aid to other underdeveloped nations whose economies had been caught between higher oil prices and lower prices for their own export commodities, amid shrinking Western demand. Much went for arms purchases that exacerbated political tensions, particularly in the Middle East. Saudi Arabia spent over 100 billion dollars in the ensuing decades for helping spread its fundamentalist interpretation of Islam, known as Wahhabism, throughout the world, via religious charities such al-Haramain Foundation, which often also distributed funds to violent Sunni extremist groups such as Al-Qaeda and the Taliban.

Question:
What is a fundamentalist interpretation of Islam called?

Wahhabism