Strong preference for research and answer(s) from researcher who
understands global economics.  Paying top fee because 4 questions, all
interesting.  Links to research in addition to your views are welcome.

TOPIC:  The patterns of growth: how to sustain global recovery
 
The global economy is growing.  Emerging market economies are
benefiting from the U.S. recovery and their performances will continue
to improve throughout the year.  And yet, with the major economies
suffering from several large imbalances, the medium- to long-term
recovery prospects are still at risk.
1. How serious are these risks? 
2. Is the huge US current-account deficit a real problem? 
3. Could a rapidly falling dollar damage not only Europe's and Japan's
economies, but also US domestic demand?
4. How might Europe free itself from the "external demand" syndrome?