Provisional Honduran President Roberto Micheletti has accepted an offer that an independent commission help broker an impasse over whether to allow the return of ousted President Jose Manual Zelaya, Costa Rica’s foreign ministry said Tuesday. Costa Rican President Oscar Arias offered to form a mediation panel with representatives from four or five countries. The development came as Zelaya, ousted by the Honduran military on June 28, met in Washington with U.S.