Hamas leader Ismail Haniyeh was killed in Iran on Wednesday, the Palestinian group Hamas and Iran's elite Revolutionary Guards said in separate statements.

The following is how the world has reacted to it:

Abdul Salam Haniyeh, a son of Ismail Haniyeh

"My father survived four assassination attempts during his patriotic 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."

Iran

Iranian President Masoud Pezeshkian has said that his country will defend its territorial integrity and dignity. "The occupiers and terrorists will regret the cowardly act of killing Ismail Haniyeh."

"The blood of martyr Ismail Haniyeh will never go in vain. Haniyeh's martyrdom in Tehran will strengthen the deep and unbreakable bond between Tehran, Palestine, and the resistance," said the spokesman for the Iranian Ministry of Foreign Affairs. "The martyrdom of Ismail Haniyeh in Tehran will strengthen the deep and unbreakable relationship between the Islamic Republic of Iran."

Meanwhile, Iran has called a meeting of its high-level security leadership over the assassination of the Hamas leader. Iran's Supreme National Security Council will decide about responding to the killing in Tehran. Senior commanders of the Revolutionary Guards will also participate in the meeting.

Palestine

After the martyrdom of Hamas leader Ismail Haniyeh in Tehran, Palestinian groups have announced a strike and mass demonstrations, reported a British news agency. Palestinian President Mahmoud Abbas strongly condemned Haniyeh's murder.

"The killing of Ismail Haniyeh is a cowardly act and a dangerous development," Palestinian President Mahmoud Abbas said. "The Palestinian people should remain united against Israel, and act with patience and perseverance."

Russia

"This is an absolutely unacceptable political murder, and it will lead to further escalation of tensions,” said Deputy Russian Foreign Minister Mikhail Bogdanov.

Houthis

"Targeting Ismail Haniyeh is a heinous terrorist crime and a flagrant violation of laws and ideal values,” said Mohammed Ali Al-Houthi, the head of Yemen's Houthi Supreme Revolutionary Committee. "The killing of the head of Hamas will make the resistance organization Hamas more determined to confront Israel."

Turkey

"We offer our condolences to the Palestinian people who have given hundreds of thousands of martyrs like Haniyeh in order to live in peace in their own homeland, under the roof of their own state.

"It has been revealed once again that the Netanyahu Government has no intention of achieving peace.

"This attack also aims to spread the war in Gaza to a regional level. If the international community does not take action to stop Israel, our region will face much greater conflicts,” the Turkish Foreign Ministry said in a statement.

Qatar

"Qatar strongly condemns the assassination of Dr. Ismail Haniyeh in Tehran and considers this a heinous crime and a dangerous escalation, as well as a major violation of international and humanitarian laws.

"The foreign ministry affirms that this assassination and Israel's reckless, continuous targeting of civialians in Gaza will push the region into a circle of chaos, as well as limit the prospects of peace."

Malaysia

"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."

China

China had strongly opposed and condemned the killing of Hamas leader Ismail Haniyeh, and expressed concern over it.

"A ceasefire in Gaza must be reached as soon as possible to avoid further escalation of conflict and tensions. China has always advocated resolving regional disputes through dialogue and negotiation."