ABU DHABI — Leaders and heads of state from the Middle East region and around the world offered their deep condolences on the passing of UAE President Sheikh Khalifa Bin Zayed.

The Ministry of Presidential Affairs announced the death of Sheikh Khalifa on Friday at the age of 73. The UAE government declared a 40-day mourning period in tribute for the departed president, who led the UAE since the passing of Founding Father and first President Sheikh Zayed Bin Sultan Al-Nahyan in 2004.

Saudi Arabia's foreign ministry expresses sincere condolences and sympathy to the Emirati government and people on the death of UAE President Sheikh Khalifa bin Zayed.

US President Joe Biden said he and First Lady Jill Biden were "deeply saddened" to learn of the passing of UAE President Sheikh Khalifa bin Zayed.

"Sheikh Khalifa was a true partner and friend of the United States throughout his decades-long tenure as President of the United Arab Emirates and Ruler of Abu Dhabi and in his earlier role as Crown Prince of Abu Dhabi," Biden said in a statement.

He added "we will honor his memory by continuing to strengthen the longstanding ties between the governments and people of the United States and the United Arab Emirates."

The UN offices in the UAE expressed their condolences on the "profound loss of Sheikh Khalifa."

"In this moment of grief, our thoughts are with the people of UAE. The UN offices are now in official mourning and the flags are flown at half-mast on all UAE lands," they said.

Sheikh Khalifa passed away after "a life full of giving in the service of his people, his homeland and the Arab and Islamic nation", GCC Secretary General Nayef Al-Hajraf said in a message to UAE leaders and people. "We have lost a Gulf, Arab and international leader and pioneer," he said.

Bahrain announced three days of mourning for Sheikh Khalifa in a statement released by the royal court.

The UAE President passed away “after a life full of giving and achievements in the service of his people and the Arab and Islamic nation and in support of its causes”, Bahrain's King Hamad said.

Qatar's Emir Sheikh Tamim sent his condolences. Oman, another GCC member, also sent its condolences on Sheikh Khalifa's death.

Egypt’s President Abdel Fattah El-Sisi expressed great sadness and sorrow on the passing of Sheikh Khalifa.

"I mourn with sincere sadness and sorrow a man of the most precious men, and one of the greatest leaders, Sheikh Khalifa Bin Zayed Al Nahyan, President of the UAE, who passed away after a long journey of giving,” he said in a post on his official page on social media.

Jordan's King Abdullah II said in a message posted on Twitter: "We have lost a dear brother and an outstanding leader who inherited wisdom from his late great father Sheikh Zayed and dedicated his life to serving his country and the Arab and Islamic nations.”

Israel's Prime Minister Naftali Bennett extended condolences to the UAE and to "my friend Sheikh Mohammed Bin Zayed".

"The legacy and great deeds of Sheikh Khalifa were much appreciated in Israel. The State of Israel stands alongside the United Arab Emirates and with it at this difficult time."

Iraq's President Barham Salih and Prime Minister Mustafa Al Kadhimi also extended condolences.

Salih said Sheikh Khalifa was a man “known for his wisdom and generosity for the sake of his homeland and the Arab and Islamic nation”.

Al Kadhimi said, "We are confident that the pioneering path that the late great man took will continue with the efforts of his country's leadership and people."

Lebanon's Cabinet declared nationwide mourning for Sheikh Khalifa, with flags to be flown at half-mast for three days until Sunday.

President Michel Aoun sent his condolences, saying Lebanon will "miss a president who defends just Arab causes, a sincere brother who loved Lebanon and the Lebanese who gave love and loyalty to him."

Turkish President Recep Tayyip Erdogan extended his condolences, saying he would visit the UAE to pay his respects, the Anadolu Agency reported.

Sudan’s Military leader, Gen Abdel Fattah Al-Burhan, offered his condolences in a statement. He described Sheikh Khalifa as an “exceptional leader and a wise man who contributed to the renaissance of his country which became a role model in development and progress.”

Palestinian President Mahmoud Abbas has mourned the death of Sheikh Khalifa and offered his condolences to the UAE and its people.

The Palestinian presidency declared a national period of mourning and flags to be flown at half-mast for one day, according to the official WAFA news agency.

Pakistan Prime Minister Shehbaz Sharif extended his condolences to the people of the UAE. “Deeply grieved to hear about the passing of His Highness Sheikh Khalifa Bin Zayed Al Nahyan, President of UAE. UAE has lost a visionary leader & Pakistan a great friend. We send our heartfelt condolences and sympathies to the government and people of the UAE. May Allah rest his soul in peace,” he tweeted. — Agencies