An obstacle can be lasting.Logical formLearned from7 sentences. Some obstacles can be during a tenure.Logical formLearned from7 sentences. Lubbers may surmount some obstacles.Logical formLearned from7 sentences. The future of a town can be an obstacle to an agreement.Logical formLearned from7 sentences. Authorities may create obstacles to sendings of (aid convoys).Logical formLearned from7 sentences. Obstacles can be placed.Logical formLearned from7 sentences. An obstacle can be in a plan.Logical formLearned from7 sentences. An obstacle can be for a return to a homeland.Logical formLearned from7 sentences. An obstacle can be to an accord.Logical formLearned from7 sentences. A tribunal may face obstacles.Logical formLearned from7 sentences. Comments may become an obstacle to progress.Logical formLearned from7 sentences. Obstacles can be to a bid.Logical formLearned from7 sentences. Persons may remove an obstacle.Logical formLearned from7 sentences. Obstacles can be for a drive.Logical formLearned from7 sentences. Obstacles can be in reaching a (peace deal).Logical formLearned from7 sentences.