Take this quiz at the Pew Research Center site and report your results in the comments. There are only 13 questions and the whole thing will probably take you less than a minute.
From the email wherein I found this quiz:
"This is a terrific and reasonably easy 13-question test. And it shows results in a number of ways. It clearly indicates that the majority of Americans don't have a clue about what's going on in the world. No wonder our politicians take such advantage of us. It's astonishing that so many people got less than half right. These results say that 80% of the (voting) public doesn't have a clue, and that's pretty scary.
"There are no tricks here - just a simple test to see if you are current on your information. This is quite good and the results are shocking.
"I believe it was Winston Churchill who opined that ' . . . the biggest argument against democracy is a 5-minute conversation with the average voter . . .' "
p.s. I got one wrong.