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An unidentified Libyan official adjusts a rank to the uniform of anti-Islamist General Khalifa Haftar (R) during his swearing in ceremony as the new army chief in conflict-ridden Libya on March 9, 2015, in the eastern city of Tobruk. The once-retired general leading a sweeping offensive against Islamists has been sworn in head of the Libyan army loyal to the country's internationally recognised parliament, in a move expected to deepen divisions in the conflict-riven nation. AFP / STR (Photo credit should read STR/AFP/Getty Images)

An unidentified Libyan official adjusts a rank to the uniform of anti-Islamist General Khalifa Haftar (R) during his swearing in ceremony as the new army chief in conflict-ridden Libya on March 9, 2015, in the eastern city of Tobruk. The once-retired general leading a sweeping offensive against Islamists has been sworn in head of the Libyan army loyal to the country's internationally recognised parliament, in a move expected to deepen divisions in the conflict-riven nation.  AFP / STR        (Photo credit should read STR/AFP/Getty Images)