Article Photos: Fresh fighting erupts between Libya rebels, regime 37/43

  A rebel fighter walks in downtown Tripoli, LIbya, early Tuesday, Aug. 23, 2011. US President Barack Obama said Monday at his vacation retreat in Martha's Vineyard, Mass. "The Libyan intervention demonstrates what the international community can achieve when we stand together as one." Obama was careful to emphasize that uncertainty remained and that Gadhafi's regime could still pose a threat. What's more, it will take several months even under a stabilized Libya before its oil fields are producing enough crude to start exporting again. (AP Photo/Sergey Ponomarev)