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David Petraeus apologizes to Congress, advises on ISIS strategy

"CBS This Morning" anchor Charlie Rose sat down with former CIA Director David Petraeus to discuss military strategy for battling ISIS terrorists
Former CIA Director David Petraeus talks ISIS strategy 10:06

Ret. Gen. David Petraeus apologized to Congress Tuesday for sharing classified information, calling it "a violation of trust."

His remarkable apology came during his first public testimony before lawmakers since he resigned as CIA director three years ago, in November 2012, after admitting that he had an extramarital affair with his biographer, Paula Broadwell.

Petraeus began his testimony before the Senate Armed Services Committee by saying, "Four years ago, I made a serious mistake, one that brought discredit and pain to those closest to me," he said. "There is nothing I can do to undo what I did. I can only say again how sorry I am to those I let down and then strive to go forward with a greater sense of humility and purpose, and with gratitude to those who stood with me during a very difficult chapter in my life."

In April, Petraeus was sentenced to two years' probation and fined $100,000 for giving Broadwell classified material while she was working on his biography. He had agreed to plead guilty to a misdemeanor count of unauthorized removal and retention of classified material.

He told the committee that the progress achieved so far in fighting Islamic State militants in Iraq has been "inadequate" and suggested the U.S. increase support to Iraqi security forces and Sunni tribal and Kurdish fighters. In Syria, he recommended the U.S. take a harder stance against President Bashar al-Assad. He supported setting up enclaves protected by coalition airpower where moderate Sunnis could be supported, civilians could find refuge and additional forces could be trained.

"The Middle East is not part of the world that plays by Las Vegas rules: What happens in the Middle East is not going to stay in the Middle East," he warned.

On Iraq, Petraeus told the lawmakers that while there have been significant accomplishments in the fight against the Islamic State, "We are not where we should be at this point."

Petraeus: More U.S. participation needed to fight ISIS 03:24

In addition to increasing support for local fighters, he suggested embedding U.S. advisers down to the brigade headquarters level for Iraqi fighting forces; exploring the use of air controllers with select Iraqi units to coordinate coalition airstrikes; and examining whether U.S. rules of military engagement for precision airstrikes are too restrictive.

Petraeus said, however, that the U.S. should not allow its forces to take over Iraqi units. "I would not, for example, embed U.S. personnel at the Iraqi battalion level, nor would I support clearance operations before a viable force is available," he said.

He called Syria a "geopolitical Chernobyl -- spewing instability and extremism over the region and the rest of the world."

"Like a nuclear disaster, the fallout from the meltdown of Syria threatens to be with us for decades, and the longer it is permitted to continue, the more severe the damage will be."

He said the U.S. is no closer today to having a moderate Sunni Arab ground force than a year ago.

U.N. ambassador on how Russian forces in Syria affect fight against ISIS 05:01

Last week, Gen. Lloyd Austin, commander of U.S. Central Command, which oversees the war effort, told the committee that only a handful of U.S.-trained Syrian rebels are still on the battlefield fighting the militants. The four or five fighters still engaged in the campaign is astonishingly short of the U.S. goal to train and equip 5,400 rebels a year at a cost of $500 million.

"The central problem in Syria is that Sunni Arabs will not be willing partners against the Islamic State unless we commit to protect them and the broader Syrian population against all enemies, not just ISIS," Petraeus said. "That means protecting them from the unrestricted warfare being waged against them by Bashar Assad, especially by his air force and its use of barrel bombs."

He suggested that the U.S. tell Assad that if he continues to use barrel bombs, the U.S. will stop the Syrian air force from flying.

"We have that capability," he said. "It would demonstrate that the United States is willing to stand against Assad and it would show the Syrian people that we can do what the Islamic State cannot - provide them with a measure of protection."

At the same time, Petraeus warned against rushing to oust Assad without knowing who would fill the resulting political vacuum in the country.

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