General David Petraeus and U.S. Ambassador to Iraq Ryan Crocker testify before Congress on April 8 and 9. All three major remaining presidential candidates are on committees that will hear testimony from Petraeus and Crocker. Senators Hillary Clinton and Senator John McCain are members of the Senate Armed Forces Committee, where Petraeus and Crocker testify the morning of the 8th. Senator Barack Obama serves on the Senate Foreign Relations Committee, where Petraeus and Crocker testify Tuesday afternoon.

Senator Clinton has promised to begin a phased redeployment of troops in Iraq within her first 60 days in office. Senator McCain believes that more troops are needed in Iraq. Senator Obama has pledged to immediately begin removing troops from Iraq, removing one to two combat brigades per month, with all combat brigades out of Iraq within 16 months.

Which of these approachees do you think is most likely to succeed? How would you define "success" in Iraq? Will the testimony given by General Petraeus or Ambassador Crocker affect your opinion? Which candidate do you think would handle the war in Iraq best, if elected? Tell us your thoughts in our comments!