Eloquence – This is ability to talk fluently without inhibition and the ability to carry along his audience without making them easily bored. If the diplomat is knowledgeable on wide range of issues, the more fluent he will be able to explain same to people.
So a good diplomat is expected to be fluent and eloquent so as to be appealing to his hosts. A good diplomat is also expected to be clever enough to know what to say at any point in time to needed by his government or that will be beneficial to his home government.