Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE policies ( start_date INTEGER )
TABLE: CREATE TABLE customers ( customer_details VARCHAR, customer_id VARCHAR )

### Question ###
Which customer is associated with the latest policy?

### Accurate SQL ###

SELECT t2.customer_details FROM policies AS t1 JOIN customers AS t2 ON t1.customer_id = t2.customer_id WHERE t1.start_date = (SELECT MAX(start_date) FROM policies)