The National Review bloggers pooh-pooh senators' performances in Tuesday's Iraq hearings. Michael Ledeen writes that not one senator asked about Iranian support for terrorist groups in Iraq. Iranian influence is "the main question," writes Ledeen, if one is to look at the war as a regional conflict. Peter Wehner is reminded of Sen. Joe BidenJoe BidenBiden lead shrinks, Sanders and Warren close gap: poll Biden allies: Warren is taking a bite out of his electability argument Budowsky: Donald, Boris, Bibi — The right in retreat MORE's (D-Del.) failed presidential campaigns by Biden's attempts to "bully" Gen. David Petraeus and Amb. Ryan Crocker into talking about troop withdrawals.