President Obama has authorized a limited new plan to train and arm rebel fighters to confront Islamic State militants in Syria, relaunching a Pentagon program that was suspended last fall after a series of embarrassing setbacks. The program is separate from a covert CIA-run training operation. The original plan involved selecting fighters from moderate Syrian rebel groups, taking them to Arab military bases outside Syria, and providing arms, equipment and six weeks of training. They then would [be] sent back to Syria. The first 54 recruits were ambushed in July by Nusra Front, an Al Qaeda affiliate. The second class of 71 surrendered much of their U.S.-issued ammunition and trucks to Nusra Front fighters in September in exchange for safe passage through northern Syria. The program initially was envisioned as a $500-million, three-year plan to recruit, train and equip fighters at bases in Jordan, Qatar, Saudi Arabia and Turkey. Thousands of rebels applied. Many were ... ineligible. In addition, the prospective host countries and many of the fighters disagreed with the U.S. emphasis on fighting Islamic State, saying the training should focus on ousting Syrian President Bashar Assad. The Pentagon shut the program down in less than a year. In its place, the Pentagon began providing communications equipment, weapons and ammunition to rebel commanders. The equipment was dropped into Syria by U.S. aircraft and distributed among the units as they pushed into territory controlled by Islamic State.