Terrorists can be an obstacle.Logical formLearned from8 sentences. An obstacle can be for reaching a solution.Logical formLearned from8 sentences. Obstacles can be from some sides.Logical formLearned from8 sentences. A plan may meet an obstacle.Logical formLearned from8 sentences. Obstacles can be to a male.Logical formLearned from8 sentences. An obstacle can be a ratification.Logical formLearned from8 sentences. An obstacle can be to resumming negotiations.Logical formLearned from8 sentences. A country may throw some obstacle.Logical formLearned from8 sentences. An other side may raise obstacles.Logical formLearned from8 sentences. Obstacles can be to concludding a treaty.Logical formLearned from8 sentences. A weakness may become an obstacle.Logical formLearned from8 sentences. An issue may emerge as an obstacle to an (autonomy deal).Logical formLearned from8 sentences. An obstacle can be to an (autonomy deal).Logical formLearned from8 sentences. An obstacle can be to reunification.Logical formLearned from8 sentences. Obstacles can be to sendings of (aid convoys).Logical formLearned from8 sentences.