PARIS - France warned Sunday of "serious consequences" if Donald Trump moves to recognise Jerusalem as Israel's capital as representatives from 70 countries met in Paris to try to revive stalled Israeli-Palestinian peace efforts.

Neither Israel nor the Palestinians are represented at the conference, which Israeli Prime Minister Benjamin Netanyahu dismissed as "futile".

Opening the meeting, French Foreign Minister Jean-Marc Ayrault said the international community wanted to "forcefully reiterate that the two-state solution is the only solution possible" to the seven-decade-old conflict.

He also warned the US president-elect against relocating the American embassy from Tel Aviv to Jerusalem, in a move to recognise the contested city as Israel's capital.

Ayrault said such a move, which Trump promised during campaigning, would have "extremely serious consequences" and predicted the incoming US leader would find it impossible to implement.

"When you are president of the United States, you cannot take such a stubborn and such a unilateral view on this issue. You have to try to create the conditions for peace," he told France 3 TV.

Both Netanyahu and Palestinian president Mahmud Abbas have been invited to meet with President Francois Hollande to discuss the conclusions of the Paris talks.

Abbas, who has backed the conference, is expected to travel to Paris in the coming weeks but Netanyahu has rejected the offer, French diplomats said.

The Israeli premier on Sunday again heaped criticism on the conference, calling it "futile." (AFP)