NICE, France (AP) — World leaders are expressing dismay, sadness and solidarity with France over the attack carried out by a man who drove truck into crowds of people celebrating France's national day in Nice, killing at least 84 people: President Barack Obama condemned what "appears to be a horrific terrorist attack" in Nice. Noting that the attack occurred on Bastille Day, the French national holiday, Obama praised "the extraordinary resilience and democratic values that have made France an inspiration to the entire world." Both presidential candidates also condemned the attacks, with Republican Donald Trump declaring this is war and Democrat Hillary Clinton vowing we will not be intimidated. Chancellor Angela Merkel pledged solidarity with France in the aftermath of the attack, saying "Germany stands at France's side in the fight against terrorism." On a state visit to Uruguay, German President Joachim Gauck said Friday that "the 14th of July, the day when France celebrates its national day, represents the values of the French Revolution, which are our values as well." Germany's Foreign Ministry flew the French flag in solidarity with its neighbor, and flags on all public buildings were ordered flown at half-staff. Putin sent condolences to French President Francois Hollande on Friday and said that terrorism can be defeated only if "all civilized mankind pulls efforts together" to fight militants, their leaders as well as targeting their financial backers "wherever they are hiding." Michael D. Higgins says after meeting France's ambassador in Dublin: This cowardly attack in a public place on a national day of celebration must be condemned in the strongest terms. Greece's Foreign Ministry says the attack in France targeted "the cradle of the ideas of liberty, equality and fraternity," adding that "the action of barbaric terrorism is doomed to fail." Czech Prime Minister Bohuslav Sobotka says the attack in France shows "we face a threat of perverse, fanatical ideology, despising humanity and human life." Czech President Milos Zeman said the attack is a reminder that "the western democracies find themselves at a time when they have to get again united and defend the values on which they were built with no mercy and no compromise." Prime Minister Taavi Roivs condemned a terrible attack on innocent people celebrating their national day. In a statement issued by the presidential palace in Kabul, Ghani said terrorism does not recognize borders, nationality, faith or religion, posing a threat to the region and the world. Ghani expressed condolences and deepest sympathies to the families of victims of the attack, and to all French people. Egyptian President Abdel-Fattah el-Sissi has extended his deepest sympathies to President Francois Hollande and the people of France for "the abhorrent terrorist attack in the French city of Nice." A statement from the presidential office says el-Sissi reiterated his support for international efforts to combat terrorism, which "knows neither borders nor religion." Egypt's Grand Mufti Shawki Allam also condemned the Nice attack, saying the perpetrators of such attacks "have followed the footsteps of the devil, shed blood, and terrorized" innocent people. The ruler of oil-rich Kuwait has condemned the attack in Nice, France, saying it "runs counter to all religious teachings and humanitarian values." The Foreign Ministry blamed the attack on the "terrorism beast" which struck France on its national day, a "symbolic day for the sacrifices of the French people throughout its history to build the culture of freedom, equality and brotherhood." The UAE is part of the U.S.-led coalition targeting the Islamic State group and hosts American and Western military personnel involved in the fight. Qatar, on the Arabian Peninsula, hosts a major American military base home to U.S. Central Command and has not faced any militant attack like neighboring Saudi Arabia. President Jacob Zuma says South Africa "stands firmly with the international community in condemning all forms of terrorism and stands in solidarity with the government of the Republic of France as they mourn the death of their citizens." South Africa shares in the grief of the French people and wishes the injured survivors a speedy recovery.