Hamas leader Ismail Haniyeh was killed in Iran on Wednesday, the Palestinian group Hamas and Iran's elite Revolutionary Guards said in separate statements.
Here are reactions:
Abdul Salam Haniyeh, son of Ismail Haniyeh: "My father survived four assassination attempts during his patrotric journey, and today Allah has granted him the martyrdom that he always wished for.
"He was very keen to establish national unity and strived for the unity of all Palestinian factions and we affirm that this assassination will not deter the resistance, which will fight until freedom is achieved."
Turkish President Tayyip Erdogan:
"This assassination is a vileness that aims to disrupt the Palestinian cause, Gaza's noble resistance and our Palestinian siblings' rightful struggle, to break the will of Palestinians, and to intimidate them. However, just as until today, the Zionist barbarism will not reach its goals."
Qatar Prime Minister Sheikh Mohammed bin Abdulrahman Al Thani:
"Political assassinations and continued targeting of civilians in Gaza while talks continue leads us to ask, how can mediation succeed when one party assassinates the negotiator on other side? Peace needs serious partners & a global stance against the disregard for human life."
Iranian Foreign Ministry spokesman Nasser Kanaani: "Haniyeh's martyrdom in Tehran will strengthen the deep and unbreakable bond between Tehran, Palestine, and the resistance."
Deputy Russian Foreign Minister Mikhail Bogdanov:
"This is an absolutely unacceptable political murder, and it will lead to further escalation of tensions."
Sami Abu Zuhri, Senior Hamas Official:
"This assassination by the Israeli occupation of Brother Haniyeh is a grave escalation that aims to break the will of Hamas and the will of our people and achieve fake goals. We confirm that this escalation will fail to achieve its objectives.
"Hamas is a concept and an institution and not persons. Hamas will continue on this path regardless of the sacrifices and we are confident of victory."
Malaysian Foreign Ministry:
"Malaysia unequivocally condemns all acts of violence, including targeted assassination, and urges all peace-loving nations to join in denouncing such acts.
"The incident underscores the urgent need for de-escalation and reinforces the necessity for all parties to engage in constructive dialogue and pursue peaceful resolutions."
Areepen Uttarasin, veteran Thai politician and former Gaza hostage negotiator:
"The assassination is very serious because it occurred in Iran. It shows that Hamas's opponents can strike any where. Assassinating the Hamas leader will make negotiations and de-escalation more difficult. Things will become more violent and the situation will worsen, it will not improve."