Hamas, which is both a political and military force, has survived the assassination of multiple leaders over the decades.

Yahya Sinwar, widely regarded as mastermind behind Hamas' brutal attack on Israel last year, was killed in Israeli military operation in Gaza.

Yahya Sinwar is dead. On Thursday, Israel confirmed it had killed the 62-year-old leader of Hamas in a strike in southern Gaza. Sinwar’s death is significant — for both the U.S.-designated terrorist group that he led and the Jewish state that he sought to destroy.