Any.
And for all the threats & cajoling against Israel to give up 'land for peace' is that Israel needs to then cut their tiny matchbox size in HALF in the unreliable promise of 'peace'.
All the more reason for them to have a large arsenal of Thermo-Nuclear weapons to deter potential enemies plus the means to deploy them at ANY enemy.
For the uninitiated in nuclear tech, a nuclear weapon = 10 to 400 kilotons, Thermo-Nuclear weapons are in the 800 kilotons to multi-megaton range.