<classify> Peter Costello, muchengeti wemari weAustralia, zvakare murume anogona kutora nzvimbo yemutungamiri wehurumende John Howard, ari mumuririri webato remaLiberal, aisa rutsigiro rwake pamusoro peindasitiri yekugadzirwa kwezvombo zveNuclear kuAustralia.  <topic>: politics 