Leading political figures across the world have paid tribute to Queen Elizabeth II, and her seven decade-long reign.

President Michael D Higgins praised the "remarkable generosity of spirit" she demonstrated in responding to "a complex, and often difficult, history."

He recalled the "exceptional hospitality afforded to Sabina and myself by the Queen, and the late Prince Philip, on our four day State visit to Britain in 2014".

When Queen Elizabeth made an "historic State Visit to Ireland in 2011, the first such visit by a British monarch since Irish independence", President Higgins said that "she did so much through eloquent word and generous gesture to improve relations between our two islands".

"The Queen did not shy away from the shadows of the past", he said.

Taoiseach Micheál Martin conveyed his "deepest sympathy" to the British people and the royal family, and agreed that her visit to Ireland "was a great success".

He noted the queen's reign was one of "historic duration, immense consequence and a focus of respect and admiration around the world".

"Her dedication to duty and public service were self-evident," the Taoiseach said, adding that her passing was "the end of an era".

"Our world is a poorer place for her passing but a far richer and better place as a result of her long life and enduring contribution."

Only days ago, Liz Truss was formally asked by Queen Elizabeth II to form a new government.

The UK's prime minister said that the monarch "was the rock on which modern Britain was built", adding that it is a "great country... because of her".

"She was the very spirit of Great Britain – and that spirit will endure", Ms Truss added, praising her "dignity and grace".

International response

European Commission President Ursula von der Leyen hailed Queen Elizabeth as "a beacon of continuity throughout these changes, never ceasing to display a calmness and dedication that gave strength to many."

"She has shown an immense amount of courage. She is a legend in my eyes," Ms von der Leyen said.

While US President Joe Biden and his wife Jill commended her "steadying presence" and the "comfort and pride" she gave "generations of Britons, including many who have never known their country without her".

Mr Biden ordered flags at the White House and other federal buildings to be lowered to half-staff, and also visited the British embassy in Washington to sign a condolence book for the queen.

The head of the United Nations noted that she "was widely admired for her grace, dignity, and dedication around the world".

Secretary-General Antonio Guterres paid tribute to the queen's "unwavering, lifelong dedication to serving her people. The world will long remember her devotion and leadership".

Ukraine's President Volodymyr Zelensky expressed his "deep sadness", tweeting his nation's "sincere condolences... over this irreparable loss. Our thoughts and prayers are with you."

French President Emanuel Macron said that he would remember her as a friend to France.

The Prime Minister of Japan Fumio Kishida described his sorrow at the news of the queen's death .

"The death of the queen, who led Britain through turbulent times in the world, is a great loss not only for the British people but also the international community," he said.

As well as being Britain's monarch, the queen was the sovereign of 15 countries in the Commonwealth of Nations, including Canada.

Prime Minister Justin Trudeau said that Canadians "will always remember and cherish Her Majesty's wisdom, compassion, and warmth".

"She was a constant presence in our lives - and her service to Canadians will forever remain an important part of our country's history", he tweeted.