Complex sentence: The decision provoked some negative responses from Icelanders, though the only significant political figure to voice objections was the one-time mayor of Reykjavík Ólafur F. Magnússon.
Split into simpler sentences: The decision provoked some negative responses from Icelanders. However, the only significant political figure to voice objections was the one-time mayor of Reykjavík Ólafur F. Magnússon.