WASHINGTON (CNN) -- Republican members of Congress plan a host of questions for Secretary of State Hillary Clinton during her long-awaited testimony on Wednesday about the deadly attack on the U.S. diplomatic compound in Benghazi, Libya.
Questions are expected to range from a security vacuum in Northern Africa to new cables suggesting that Ambassador Christopher Stevens, who was killed in the September 11th assault, once proposed moving the compound to a more secure location adjacent the CIA Annex, sources tell CNN.
Congressional staffers have been shown new State Department e-mails and cables indicating that in November 2011, Stevens, concerned about the safety of the compound in Benghazi, proposed two options to the State Department, sources tell CNN. The first involved moving the compound back into a hotel. The second would move the compound to an unoccupied villa adjacent the CIA annex. CIA officials agreed with U.S. diplomatic personnel on the ground that the latter option would be safer. But the State Department rejected the idea.
The presence on the House Foreign Relations Committee of several new members and on the Senate Foreign Relations Committee of at least two possible GOP presidential hopefuls – Marco Rubio of Florida and Rand Paul of Kentucky – has some State Department officials anticipating aggressive questions about whether the presence of Islamic extremists in Mali and Algeria were in any way related to past decisions by the Obama administration to keep U.S. combat troops out of Libya.
Most questions are expected to re-visit well-worn lines of inquiry about why requests by officials on the ground in Libya for additional security were not heeded, and faulty talking points about whether an anti-Islam video played a role in the attack that also killed three other Americans.
Other questions could involve the State Department response to the terrorist bombing of the U.S. compound in Benghazi that had occurred the previous June.
Lawmakers may also be interested in Clinton's precise whereabouts on the night of the September attack, her personal involvement in administration actions that night as well as efforts to locate Stevens, who went missing before he died.
Clinton will testify for 90 minutes before the Senate Foreign Relations Committee in the morning and 90 minutes before the House Foreign Affairs Committee in the afternoon.
Senior officials tell CNN that Clinton will not shy away from any tough questions and intends to assert responsibility for weak security at U.S. diplomatic posts, something that State Department is urgently addressing, senior officials tell CNN.
It's a position Clinton took soon after the September attack, telling CNN in an interview last October that she was ultimately responsible for security.
"I'm in charge of the State Department, 60,000 plus people all over the world, 275 posts. The president and the vice president certainly wouldn't be knowledgeable about specific decisions that are made by security professionals," Clinton said in the interview.
An independent investigation of the incident absolved Clinton of blame for weak security. The probe, instead, placed responsibility in the Benghazi case on working level officials in the offices of Diplomatic Security and Near East Affairs.
The findings of the Accountability Review Board prompted the resignation of the top diplomatic security official. Others have been fired or reassigned.
There have been more than 30 hearings and closed door briefings on Benghazi with State Department officials present.
Her scheduled appearance in December was postponed after she fell ill and then suffered a concussion and a blood clot in December.
Responding to accusations from her harshest critics that Clinton has been avoiding Congress, the officials noted that she was the first top official to brief the full Senate in closed session on September 20.
The meeting was held at her suggestion and she answered any and all questions for more than two hours, the officials said. Expect the same direct approach on Wednesday.
"She's going to answer every question asked of her," one senior official said.
"She gets it," the official said of the former senator from New York. "She served up there for eight years and has sat on both sides of the dais. She knows they have a role to play, not just in figuring out what happened but they need to be partners in providing security for our diplomats."
The official noted that since Congress holds the purse strings for security budgets, they have been historically instrumental in helping secure resources for embassy and diplomat security.
Despite the heated politics surrounding Benghazi ahead of the election, committee staffers say they expected the tone of the hearings to be civil, saying that "even Republicans on both committees generally like and respect her."
Republican Sens. Jeff Flake of Arizona and John Barasso of Wyoming both told CNN that they will have detailed questions about what went wrong in Benghazi but expect the overall tone of the hearing to be very respectful.
Democrats privately say they don't expect Republicans to be overly adversarial because they think Republicans are chagrined by being linked, fairly or unfairly, to the conspiracy theory that Clinton faked her illness to get out of testifying.
Clinton is expected to detail what the State Department has done to implement 29 recommendations from the investigation by the review board in addition to a few of her own.
But officials note that she didn't wait for the review board report before appointing a State Department team to work on tightening security.
Joint teams of military special forces and diplomatic security threat analysts were sent to more than a dozen high-risk posts. A senior official was appointed to focus solely on high threat posts.
President Barack Obama ordered a review of security at all diplomatic outposts in the wake of the attack.
But despite the renewed focus on security, Clinton will stress that U.S. diplomats still need to operate in high threat environments.
"The reason that hasn't changed is that these places have a direct and vital national interest" to the United States, one official said.
Clinton also is likely to face questions about the storming of the natural gas facility last week in Algeria during which militants seized dozens of hostages. Three Americans lost their lives.
Al Qaeda in the Islamic Maghreb is believed to have had a hand in the attack. Clinton also will likely face questions about the battle against extremists in neighboring Mali.
Republicans may raise the issue of Obama's suggestion that al Qaeda was on the run following the death of Osama bin Laden in 2011.
"Clearly Benghazi and now Algeria show that is not the case," one House staffer said. "I would expect questions asking what the U.S. is going to do now."