According to wiki, the suitcase nuke yield is about 0.19 kT. The physical damage might not be much, but the psychological damage to a city would be much greater. Irradiation fear would be rampant.
5 kT is the smallest nuclear weapon in the U.S. by law in 1994, but that was repealed in 2004.
5 kT is the smallest nuclear weapon in the U.S. by law in 1994, but that was repealed in 2004.