R&D: Bayh Decides Not to Seek Re-Election, Midterm Challenges for Both Sides in 2010, and Clinton Warns of a Nuclear Middle East

Here is your R&D top five for February 16th:

Democratic Sen. Bayh of Indiana won’t run for reelection from the Washington Post

Midterm Election Challenges for Both Parties from the Pew Research Center

Clinton warns of Mideast nuclear arms race from the Miami Herald

Students as Spies: The Deep Politics of U.S.-Colombian Relations from Upside Down World

Strict rules slowing offensive, troops say from the Boston Globe