VERSAILLES, France - French President Francois Hollande said France's constitution needed to be amended to better deal with crisis situations as he addressed both houses of parliament convened at Versailles.

Hollande said he wanted French law to allow dual nationals to be stripped of their French citizenship if they were convicted of terrorism and dual nationals to be banned from entering France if they presented a "terrorism risk".

He also pledged to increase budgets for security forces and the army.

"That will lead to higher spending, which I take responsibility for," Hollande said.

"I consider that in these circumstances, the security pact prevails over the stability pact," he said, referring to the eurozone budget limits.

Hollande?also said?France will step up strikes in Syria where Friday's shootings and suicide bombings in Paris had been planned.

In an extraordinary address to both houses of parliament, Hollande called on the United Nations Security Council to rapidly issue a resolution against terrorism.

"In the mean time, France will intensify its operations in Syria," Hollande said, describing the country as "the biggest factory of terrorists the world has known".