The organisers of the Paris Olympics have promised a "great national party", but with just 100 days to go, France's divisive politics and gloomy mood are casting a shadow over the anticipation.

The total cost of the Paris Olympics remains uncertain, with differing views on whether it will exceed initial estimates, making it seem expensive, or appear relatively affordable compared to recent Games.

US Olympic chiefs said they were "not surprised" by French President Emmanuel Macron's comments that the opening ceremony of the Paris Olympics could be moved from the Seine River to the national stadium in the event of a terrorist threat.

The Paris Olympics are preparing to face an unprecedented wave of cyber threats, now enhanced by the integration of artificial intelligence, marking a significant shift in their defensive strategy.

Holding the opening ceremony of the Olympic Games on the Seine is the "main plan" and "very likely", said Tony Estanguet, president of the organising committee, on Tuesday, the day after Emmanuel Macron's comments suggesting alternative venues at the Trocadéro and the Stade de France.

On Monday, French President Emmanuel Macron praised the renovation of the Grand Palais in Paris, which will be transformed into a venue for Olympic fencing and taekwondo events.

The sacred flame for the Paris 2024 Olympic Games was lit on Tuesday in Olympia, Greece, the birthplace of the ancient Games, in a ceremony inspired by antiquity and marked by messages of hope amid multiple global crises.

The first French torchbearer on Greek soil has been announced. Paris 2024 has chosen Laure Manaudou, a three-time Olympic swimming medallist and captain of the Olympic torch relay.

French President Macron expressed he was "shocked" by the recent "racist" comments and remarks about Franco-Malian singer Aya Nakamura's performance at the Paris Olympics Opening Ceremony.

Less than three and a half months before the opening of the Paris 2024 Games, the Olympic flame will be lit on Tuesday in Ancient Olympia, Greece, to begin a journey that will take it from the Acropolis to French Polynesia before arriving in the French capital on 26 July.

Emmanuel Macron on Monday justified the difference in treatment at the Olympic Games between Russia, which has been excluded as a nation because it decided to wage a "war of aggression" in Ukraine, and Israel, whose flag will be present because it has not been an "aggressor".

French President Emmanuel Macron said on Monday that the opening ceremony of the Paris Olympics could be moved from the Seine to the national stadium in the event of a security threat.

French authorities have urged citizens to walk, work from home and "take the bike" to avoid traffic chaos during the Olympic Games, which begin in Paris and other French regions at the end of July.

Since Paris launched its bid to host the Olympic Games, which it successfully secured in 2017, the project has undergone numerous changes by the organisers and government authorities.

The head of the Paris police said crime around the Eiffel Tower and other tourist hotspots had dropped significantly ahead of the Olympics later this year.