French Foreign Minister Stephane Sejourne called the humanitarian situation in Gaza "catastrophic" and repeated calls for a cease-fire in Saudi Arabia.

"Things are moving forward but you always have to be careful in these discussions and negotiations," Sejourne told Reuters news agency on the sidelines of a World Economic Forum (WEF) meeting in Riyadh.

Speaking at the same event on Monday, German Foreign Minister Annalena Baerbock renewed her calls for more humanitarian aid to be allowed into Gaza and reiterated Germany's support for a two-state solution.

Earlier on Monday, European Union foreign policy chief Josep Borrell told reporters he wanted EU member states to invite Arab leaders to Brussels to present their proposals for advancing a two-state solution.

"My only hope, my strong will, is to believe that if Arabs put on the table a proposal, Europeans will have to consider overcoming our divisions because it's not a secret that the Europeans are strongly divided," he said.

"I will propose to member states to invite the Arabs to come to Brussels and to share with us their plan because we have to try to put together our approaches," he added.