Israel has confirmed that it killed Hamas leader Ismail Haniyeh in Tehran. Talks between Hamas and Israel were reportedly 90% complete, but key issues remained. Haniyeh was widely considered Hamas's overall leader and played a key role in negotiations for a ceasefire in the Gaza Strip. Israel has also targeted other Hamas and Hezbollah leaders this year. The conflict between Israel and Hamas has resulted in a high number of casualties and has drawn criticism from humanitarian and rights groups.