David Cameron is in Paris to meet French President Francois Hollande and discuss anti-terrorism operations and the fight against Islamic State.
It comes after the UN Security Council called on all "able states" to join the fight against so-called Islamic State militants in Syria and Iraq and redouble their efforts to prevent further attacks by the group.
The 15-member council unanimously adopted a resolution on Friday, drafted by France in the wake of the Paris terror attacks that killed 130 people. Islamic State said they were responsible for the attacks.
