Thanks very much for reading our Need to Know blog, this Sunday, December 8. Here are the biggest developments of the day so far.

• PM says synagogue fire ‘fulfils definition of terrorism’: Prime Minister Anthony Albanese has labelled the attack on the Adass Israel synagogue in Melbourne on Friday morning as an act of terrorism, ahead of a discussion on Monday between the Victorian and federal police to assess the incident.
• Jewish community to come together after arson attack: More than a thousand Jewish community members are set to gather in solidarity in the wake of Friday’s arson attack on the Adass Israel Synagogue.
• Coalition’s nuclear energy plan backed by ‘credible’ costings, says Dutton: Opposition Leader Peter Dutton has brushed aside criticism of the estimated cost of the Coalition’s signature nuclear energy policy, saying an independent economic advisory firm had completed the modelling.
• Trump welcomed by Macron, joined by Zelensky for talks: French President Emmanuel Macron welcomed Donald Trump to Paris on Saturday (Sunday AEDT) with a full dose of presidential pomp as the two held a hastily arranged meeting with Ukraine’s Volodymyr Zelensky before celebrating the grand reopening of the Notre Dame Cathedral.
• Syrian rebels say they have begun entering the capital Damascus: Syrian rebels said on Sunday they have begun entering the capital Damascus without any sign of army deployments.