Whether or not it was a disaster depends upon Hillary's ultimate goal. Libya was was performed under the aegis of the UN's R2P (responsibility to protect).
Hillary's Huge Libya Disaster Charles R. Kubic June 15, 2016
Prior to the February 17, 2011, “Day of Rage,” Libya had a national budget surplus of 8.7 percent of GDP in 2010, with oil production at 1.8 million barrels per day, on track to reach its goal of 3 million barrels per day. Currently, oil production has decreased by over 80 percent. Following the revolution, the Libyan economy contracted by an estimated 41.8 percent, with a national deficit of 17.1 percent GDP in 2011.
Before the revolution, Libya was a secure, prospering, secular Islamic country and a critical ally providing intelligence on terrorist activity post–September 11, 2001. Qaddafi was no longer a threat to the United States. Yet Secretary of State Hillary Clinton strongly advocated and succeeded in convincing the administration to support the Libyan rebels with a no-fly zone, intended to prevent a possible humanitarian disaster that turned quickly into all-out war.
Within weeks of the revolution there were two valid cease-fire opportunities, one presented to the Department of Defense and Joint Chiefs of Staff (JCS), and a second opportunity presented to U.S. Africa Command for direct military commander negotiations to effect Gaddafi’s abdication, in which I was personally involved. Both opportunities were rejected and shut down by Secretary Clinton. Internal communications that went public last year revealed that on March 18, 2011, a colonel in JCS wrote, “. . . Due to the UNSCR, Libyan forces sped up ops to get to Benghazi, and will soon cease fire. As expected. Our contact will arrange a face-to-face meeting with Saif, or a skype/video-telecon to open communications if time does not permit. It will have to be with a high level USG official for him to agree. If there will be an ultimatum before any ops, the USG must be in communication with the right leaders and hopefully listen for any answer. A peaceful solution is still possible that keeps Saif on our side without any bloodshed in Benghazi.” However, on March 14, 2011 Secretary Clinton had already met with rebel leaders in Paris, including Mahmoud Jibril, number two in the Libyan Muslim Brotherhood, and had committed to support their revolution.
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Despite valid ceasefire opportunities to prevent “bloodshed in Benghazi” at the onset of hostilities, Secretary Clinton intervened and quickly pushed her foreign policy in support of a revolution led by the Muslim Brotherhood and known terrorists in the Libyan Islamic Fighting Group. One of the Libyan Rebel Brigade commanders, Ahmed Abu Khattala, would later be involved in the terrorist attack in Benghazi on September 11, 2012. Articulating her indifference to the chaos brought by war, Secretary Clinton stated on May 18, 2013, to the House Oversight Committee and the American public, “Was it because of a protest or was it because of guys out for a walk one night and decided they’d go kill some Americans? What difference, at this point, does it make?”
Secretary Clinton’s war actually did make a difference. It led to a very real and very tragic humanitarian disaster. Her bad judgment and failed policy resulted in the arming of terrorists, months of war and tens of thousands of causalities, the murder of the American ambassador and the deaths of three other brave Americans, continued civil war and the collapse of the Libyan economy, and a failed nation-state contributing to a tragic European migrant crisis. Clearly the Libyan disaster tops Secretary Clinton’s legacy of failure.