The United States and Italy are leading an international push to get Libya's warring factions to sign a deal that sets up a national unity government, to help stabilize the chaotic North African country.

U.S. Secretary of State John Kerry says a unified government is the only way to counter the growing influence in Libya of Islamic State, or Daesh. 

"We cannot allow the status quo in Libya to continue. It is dangerous for the viability of Libya, it is dangerous for Libyans and now, because of the increase in the presence of Daesh purposefully migrating there, it is dangerous for everyone."

The U.N. has been negotiating for a year to get Libya's two rival governments and armed factions to end the war that has plunged the country into chaos four years after a Western-backed rebellion ousted Muammar Gaddafi.

Successfully signing an agreement would open the way for the international community to support Libya in the fight against Islamic State, which has gained ground in the chaos, and now controls the western city of Sirte.

But it's not clear how officials will convince opponents and armed factions that might reject the deal to support a government that they will view as unrepresentative.