Syria is 2.6 times larger than Sierra Leone.
Area: 71,740 km2 World Factbook
Population: 5,743,725 (July 2014) World Factbook
Sierra Leone, officially the Republic of Sierra Leone, is a country in West Africa that is bordered by Guinea to the northeast, Liberia to the southeast, and the Atlantic Ocean to the southwest. Sierra Leone is a constitutional republic with a directly elected president and a unicameral legislature. Wikipedia
Area: 185,180 km2 World Factbook
Population: 17,951,639 (July 2014) World Factbook
Syria, officially the Syrian Arab Republic, is a country in Western Asia, bordering Lebanon and the Mediterranean Sea to the west, Turkey to the north, Iraq to the east, Jordan to the south, and Israel to the southwest. Wikipedia