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 table_203_587 ( id number, "country" text, "weapon designation" text, "weapon description" text, "year(s) delivered" text, "quantity delivered" number )

### Question ###
what is the total number of tanks sold by china to iraq ?

### Accurate SQL ###

SELECT SUM("quantity delivered") FROM table_203_587 WHERE "weapon description" = 'tank' AND "country" = 'china'