David Cameron has said the “world is coming together” to battle so-called Islamic State as he held talks with French President Francois Hollande.
Speaking in Paris, the “ministers ” said it was his “firm conviction' that the UK should join air strikes in Syria but government decisions would be up to MPs.
He said he would set out his suit to Parliament this week ahead of a vote expected before Christmas.
The UK is building its Akrotiri airbase in Cyprus available to the French.
As France pushings for a stronger international coalition against IS in the wake of the terror attacks in Paris, which have left 130 people dead, the French President said his country would “intensify” its action in Syria.