Homs's troubles show the challenges facing Syria's leaders / Syrians return to Homs, 'capital of the revolution' / An uneasy calm settles over Syrian city of Homs after outbreak of sectarian violence / Uneasy calm settles over Syria's Homs after brief outbreak of violence / Syrians return to Homs - hellish hub of Assad's most evil war crimes after years of massacre, starvation, rape & torture / Homs celebrates the end of Assad's regime / Rebels push into Homs as Syrian leader reportedly flees / Syria's anti-regime forces enter Homs in advance toward Damascus / Thousands flee Syria's Homs city as opposition forces close in: War monitor