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 country (country VARCHAR, country_id VARCHAR)
TABLE: CREATE TABLE city (country_id VARCHAR)

### Question ###
Which countries have at least 3 cities?

### Accurate SQL ###

SELECT T2.country FROM city AS T1 JOIN country AS T2 ON T1.country_id = T2.country_id GROUP BY T2.country_id HAVING COUNT(*) >= 3