I'll admit: I have never been to Europe.
Second confession: Despite majoring in political science in college, I left school knowing very little about the real intricacies and tangles of history that make up this small, diverse section of the world.
When Rossi's "What Every American Should Know About Europe" came out, I sought a copy for these reasons. The bold "What every American should know..." title hooked me after her first book of the series hit the shelves, and I bought it on a whim, looking for a quick reference overview of the world and to see if the claim held water.
After digesting her brand of humor and the way she presents information often overlooked by other current affairs books, I felt it was worth the money and doubled the impact (and, saved time) of regular texts specializing in the plethora of topics she covers.
Rossi's style of writing uses humor and her snappy perspective to deliver loads of information with ease. She has a knack for making what would otherwise be garbles of boring facts fun to read, and at the end of the book, you realize you actually learned something. I still keep her past books around to reference when their various subject matters pop up in the news.
In the Europe book she covers hoards of locales and summarizes them cleverly and without hesitation to address the most sensitive topics in the region. Sprinkled throughout the books are also countless photos, maps and side-boxes to retain the attention span of even the most ADD readers. More importantly, it keeps the book - about 400 pages, sometimes seeming a little long - enjoyable and moving fast.
As for the previous comment about her politics, a reader always has to take into account that even if an author claims to not assume any bias (which I don't think Rossi does), all authors write with perspective. In my opinion, perspective gives the reader a better understanding of the material at hand, and moreover, offers interpretation to it based upon a certain train of thought.
Every situation can be looked at from innumerable angles, and it would be impossible to write about something as vast as the whole of Europe while feigning a nonsensical notion of objectivity the entire time.
Regardless, to me the book wasn't scribed in a "liberal" tone, but rather in the voice of someone who has actually traveled the region and made her own personal (and seemingly experienced) observations.
A catch with the book, as in all current affairs books, is they must be constantly updated to keep pace with the ever-shifting situations in different countries. It will still retain the historical information, however, which serves to explain much about why the countries stand - or fall - the way they do today.