UK
"The whole nation has been shocked by the death and injury in Manchester last night of so many people, adults and children, who had just been enjoying a concert.I know I speak for everyone in expressing my deepest sympathy to all who have been affected by this dreadful event and especially to the families and friends of those who have died or were injured.
I want to thank all the members of the emergency services, who have responded with such professionalism and care.
And I would like to express my admiration for the way the people of Manchester have responded, with humanity and compassion, to this act of barbarity.
ELIZABETH R."
Belgium
Our thoughts are with the victims and injured in #Manchester & their families. Our deepest condolences to the people of the United Kingdom.— Belgian Royal Palace (@MonarchieBe) May 23, 2017
Denmark
"Your Majesty,
It was with profound shock and sadness that I received the news of the dreadful attacks on innocent predominantly young people gathered in Manchester on 22 May 2017.
In this difficult time, my heartfelt sympathy is with you and with the British people. Please accept my deepest sympathy with the victims and my sincere condolences to their families.
I pray that the death toll and number of injured will not rise further.
Margrethe R."
Jordan
"Your Majesty,
It was with profound shock and sadness that I received the news of the dreadful attacks on innocent predominantly young people gathered in Manchester on 22 May 2017.
In this difficult time, my heartfelt sympathy is with you and with the British people. Please accept my deepest sympathy with the victims and my sincere condolences to their families.
I pray that the death toll and number of injured will not rise further.
Margrethe R."
Jordan
His Majesty King Abdullah II condemns the Manchester blast and offers condolences to British Prime Minister Theresa May #Jordan— RHC (@RHCJO) May 23, 2017
Luxembourg
"Your Majesty,
It is with great pain that the Grand Duchess and I have learned of the Tragedy that Occurred in Manchester last night. We are particularly horrified to learn that so many young people were present and are counted amongst the victims and the wounded.
The Luxembourg people join us in expressing to Your Majesty our most heartfelt sympathy. Our thoughts and prayers go out the victims and their families.
Henri
Grand Duke of Luxembourg"
Monaco
"Your Majesty,
It is with a deep emotion that I learnt of the unspeakable tragedy in Manchester.
Our thoughts and prayers are with the grieving families of the innocent victims of this new act of violence.
On behalf of the people of Monaco, my family and myself, allow us to express our feelings of deep pain and sorrow.
Let me assure Your Majesty of our solidarity for the Victims and their families.
Albert, Prince of Monaco"
Netherlands
“We are profoundly saddened by the horrific attack in Manchester which has claimed the lives of so many young people. We sympathise deeply with all the parents who have received the dreadful news that their child has died, and with the victims’ other grieving relatives and friends. Our thoughts are also with those who are anxiously awaiting news about the fate of their loved ones.”
Norway
"I was deeply saddened by the tragic news of the terror attack in Manchester, resulting in the loss of so many lives and inflicting such dreadful injuries. I extend my condolences and ask you to convey the deepest sympathy of the Norwegian people to the bereaved families and to those who are injured. Harald R"
Spain
"There are no words to condemn these murderers. The rule of law will not surrender to terrorism. Spain with Manchester and United Kingdom."
No hay palabras para condenar a estos asesinos. El Estado de Derecho no se rendirá ante el terrorismo. España con Manchester y Reino Unido.— Casa de S.M. el Rey (@CasaReal) May 23, 2017
Sweden
"It's sad as the Queen and I received the message of the horrific deed in Manchester, UK.
This deed is another attack against the open and tolerant society that we all want to live in. It is important that we stand united together against this unimaginable evil.
My and the Royal family's thoughts go to the victims, their families and to the whole British people. "
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I haven't seen any messages from Liechtenstein. They may have sent their condolences privately.