A Philippine plan to evacuate all 13,000 of its workers in strife-torn Libya is a "challenge", with many reluctant to leave despite the dangers, the Filipi** foreign ministry said Friday. The ministry an**unced a "mandatory" evacuation of all 13,000 of its nationals living in Libya last month after the beheading of a Filipi** construction worker abducted by unk**wn suspects. "Our target is 100 percent" evacuation, foreign department spokesman Charles Jose told AFP on Friday. Foreign Secretary Albert del Rosario left for Tunisia to arrange the evacuations on Thursday.