How do I get Churchill to "surrender"?

Hint 1 of 9:

Obviously, you should wait for him to make a radio broadcast.

Hint 2 of 9:

Have you been to Rome, 1940 AD, and listened in on Hitler?

Hint 3 of 9:

If you wait a few minutes, he'll tell you something important.

Hint 4 of 9:

The British code word for surrender is "cigar."