I want to know the answer to the following question:
Why did Eisenhower need surgery on June 9, 1956?
All the background I'm provided with is that "During a visit to England he complained of dizziness and had to have his blood pressure checked on August 29, 1959; however, before dinner at Chequers on the next day his doctor General Howard Snyder recalled Eisenhower "drank several gin-and-tonics, and one or two gins on the rocks ... three or four wines with the dinner".". Is that enough to answer the question?
Answer: no