The First Minister was among thousands of Scots who marked the 10th anniversary of the 9/11 terrorist attacks in memorials held across Scotland.
Alex Salmond attended an inter-faith service of remembrance at St Nicholas Kirk in Aberdeen to mark the anniversary of the attacks. He has also written to the US Secretary of State Hillary Clinton on behalf of the people of Scotland expressing condolences.
Mr Salmond said: "Our thoughts are with the families and friends of all those who lost their lives on that darkest of days.
"At this time we pay tribute to the spirit, dignity and resilience shown by the American people in facing this most appalling of terrorist atrocities.
"As well as the despair of loss, there is also the humanity and sacrifice of those who bravely risked their lives to help others."
Faith leaders also joined people for a 9/11 Walk for Peace In Edinburgh on Sunday afternoon.
Leader of the Catholic church in Scotland Cardinal Keith O'Brien, former Church of Scotland Moderators, Bishop Brian Smith, Rabbi David Rose, Imam Mohammad Sajjad, Imam Sohail and Wege Singh all participated in the walk, which beganoutside the Hindu Mandir in St Andrew's Place in Leith.
Speaking during the walk, Stephen Smyth, the general secretary of Action of Churches Together in Scotland, said: "It's lovely. The mood is just beautiful. People are smiling and the rain has held off too. It's a wonderful mix of people.
"We wanted to show that our core values are similar, we share the same basic human values."
Deputy First Minister Nicola Sturgeon was among 350 people who attended an inter-faith service of remembrance and thanksgiving at Cathcart Old Parish Church in Glasgow. Members of Strathclyde Fire and Rescue Service, Strathclyde Police, school children and war veterans were amongst those at the service.
Reverend Neil Galbraith, founder of Glasgow the Caring City, said: "The 11th of September 2001 was a day which changed the world, and, for Glasgow the Caring City charity, a day when we were called once again to stand up to the mark and act in the name of compassion.
"On that day we made a promise to 'never forget'. We continue to keep that promise."
The act of remembrance was conducted by a wide range of clergy and politicians, led by Archbishop Mario Conti and the Reverend Sandra Black, Moderator of the Presbytery of Glasgow.
The Caring City worked with families of victims of the Twin Towers attack in the weeks after the atrocity, bringing many to Scotland for holidays and respite. They also worked with families in New York. The holidays continued for five years but the organisation still offers support.
The 9/11 attacks killed nearly 3000 people in New York and Washington. The vast majority of the dead were civilians, including nationals of more than 70 countries.