NEW : Saif Gadhafi says the rebels are losing , insists '' we will not leave '' Libya . The rebel leader is in a Tripoli hotel and has been meeting with his supporters to try to persuade them that they can still win back control of their country from Moammar Kadafi's regime. A rebel official says that the `` coordinated '' Tripoli operation is `` going easily '' Heavy clashes broke out late Saturday in a Tripoli neighborhood , a resident says .
NEW : Saif Gadhafi says the rebels are losing , insists '' we will not leave '' Libya . Moammar Gadhafi slams the rebels ' `` lying campaign , '' vows their end is near . A rebel official says that the `` coordinated '' Tripoli operation is `` going easily '' Heavy clashes broke out late Saturday in a Tripoli neighborhood , a resident says .