Sentence 1: The area was also threatened by Shi'a extremists known as Assassins ( `` Hassassin '' ) and in 1260 the Mongols briefly swept through Syria .
Sentence 2: The area was also threatened by Shia extremists known as assassins ( `` hassasin '' ) , and in 1260 the Mongols swept through Syria briefly .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?