| TESTBAN | Try to outlaw agreement to forgo trials of nuclear weapons (4,3) |
| KILOTON | Unit traditionally used to rate the energy output, and hence destructive power, of nuclear weapons, whose symbol is kt |
| ROTBLAT | Sir Joseph, Polish-born physicist noted as a critic of nuclear weapons (7) |
| SESSION | Spaniard's agreed, in eg spring, to forgo a period of boozing? |
| NODULES | Swellings said to outlaw engagements of honour? (7) |
| CATCALL | Liz Truss meant to outlaw this form of street harassment |
| TURNTHE | Face opposite direction in order to forgo retaliation (4,3,5,5) |
| ROUGHIT | Old wig-wearer on strike has to forgo luxuries |
| URANIUM | This element, whose isotopes are used as fuel in nuclear reactors and nuclear weapons, was discovered by German chemist Martin Heinrich Klaproth in 1789. One pound of this material yields as much ener |
| ABANDON | Discontinue first attempts to outlaw mafioso (7) |
| IKEBANA | Former President to outlaw a Japanese art form (7) |
| OCEANIC | Mainly, it's to outlaw cocaine (7) |
| BANDEAU | Dictator's to outlaw green cloth garment |
| HARPOON | Continually talk about beginning to outlaw whaling equipment (7) |
| MEGATON | Unit of explosive power used for nuclear weapons |
| TRIDENT | Successor to Britain's Polaris nuclear weapons programme (1962-96), established in 1980 (7) |
| DOGBANE | Venetian leader about to outlaw plant |
| TESTBED | Equipment used for trials of new equipment, such as aircraft engines |
| DRIVING | Could they be trials of golfers' ability? (7,5) |
| CHICAGO | Which musical is based on a play about murder trials of the early 1920s? (7) |
