Russia kicked off their World Cup in style on Thursday, scoring early against Saudi Arabia in front of an ecstatic crowd in Moscow after President Vladimir Putin officially declared the tournament open. After a performance from British pop star Robbie Williams, Putin told the 80,000 crowd at the Luzhniki Stadium: "I congratulate all of you at the start of the most important championship in the world."
"Love for football unites the entire world in one team, regardless of people's language or ideology," Putin said to thunderous cheers from the capacity crowd. Then, to the delight of the home fans, Iury Gazinsky headed Russia in front in the 12th minute after a cross from Aleksandr Golovin. Substitute Denis Cheryshev rifled home a second goal shortly before half-time.
Russia, ranked a lowly 70th in the world - three places below Saudi Arabia - know victory in their first match is vital, with tougher games against Egypt and Uruguay to come.
Russia is spending more than $13 billion (11 billion euros) on hosting football's showpiece, the most important event in the country since the 1980 Moscow Summer Olympics.
The buildup to the tournament has been dogged by controversy and diplomatic scandals and has shone a light on the challenges facing the country.
On the day of the curtainraiser, Russia freed the main opposition figure to Putin, Alexei Navalny, from jail after he served a 30-day sentence for organising an illegal protest.
But British gay rights activist Peter Tatchell was arrested for holding a one-man protest against the country's record on gay rights, hours before kick-off.
The World Cup favourites - Germany, Spain, France, Brazil - enter the fray from Friday onwards.
Brazil and their superstar Neymar are seeking a sixth global crown while Germany, who won their fourth World Cup in Brazil four years ago, will be determined to draw level with the Brazilians.
France boast possibly the most talented squad while Lionel Messi is desperate to make amends for Argentina's defeat in the 2014 final. The preparations of 2010 winners Spain are in tatters after coach Julen Lopetegui was sacked just two days before their opening game on Friday against Portugal. He had angered his federation by taking the job of Real Madrid manager.
Neymar, the world's most expensive player, has recovered from a broken bone in his foot in time.
Egypt's coach said prolific striker Mohamed Salah is "almost 100 percent" to play in their opening match against Uruguay on Friday after he had intensive treatment on the shoulder injury he suffered playing for Liverpool against Real Madrid in the Champions League final.
The money lavished on the tournament will boost Putin's already sky-high prestige at home by giving many of the 11 host cities their first facelifts in generations.
Cities such as Saransk were sleepy outposts with decaying buildings until the World Cup reconstruction put them firmly in the 21st century.
The tournament also offers Putin a chance to project Russia as a global player that is accepted and respected even while being at odds with the United States.
He is attempting to do so despite Russia being hit by international sanctions following its invasion of Ukraine's Crimea in 2014.
Moscow's military backing of the Syrian regime and alleged meddling in the 2016 US election on President Donald Trump's behalf only deepened its worst rift with the West since the Cold War.
Putin hopes the most-watched event on the planet provides Russia with the "soft power" needed to capture a sceptical world's hearts and minds. Russian authorities have gone to great lengths to ensure nothing soils the country's image.
The bloody beating English fans took from nearly 200 Russian thugs at Euro 2016 in France has influenced preparations as much as any diplomatic dispute. Neo-Nazi hooligans who organise mass fights in forests and chant racist slurs at players have been a feature of Russian stadiums for years.
The anti-discrimination network Fare said Russia's football federation was making matters worse by punishing those who reacted to racist abuse "while ignoring the perpetrators". Security services have either locked up or restricted the movements of hundreds to make sure they do nothing to tarnish Russia's image.