Complex sentence: Foreign minister Carl Bildt was questioned for his former directorship in Vostok Nafta, and his possible bias in the question of the planned Nord Stream pipeline between Russia and Germany on the floor of the Baltic sea, through Swedish territorial waters.
Split into simpler sentences: Foreign minister Carl Bildt was questioned for his former directorship in Vostok Nafta, and his possible bias in the question of the planned Nord Stream pipeline. The pipeline in question was intended to reach between Russia and Germany on the floor of the Baltic sea, through Swedish territorial waters.