Unless you can prove that your LL burglarized your apartment, you cannot break your lease without financial penalty.
No. Your lease doesn't guarantee you safety from the evils of the world. But renters insurance will cover the loss. All the landlord is required to provide is a lock on the door (dead bolt not required).
You may break your lease at any time if you are prepared to face the consequences. Burglary is not a valid reason.
No.....unless you can show negligence on your landlord's part. Such as not providing a dead-bolt on each exterior door. I my state any residential rental property is required to have a deadbolt on exterior doors.
Not without penalty, no.
no
