Political stoush over Sydney lockdown flares between Victorian and federal governments; Commonwealth Bank predicts hit to economic growth

Recriminations have flared between Victorian and federal governments emergency support to NSW because of the Sydney lockdown. 

Meanwhile, Commonwealth Bank economists think Sydney lockdown will hit Q3 GDP hard (down 1.4pc), resulting in a 0.7pc contraction. 

CBA head of Australian economics Gareth Aird tells ABC's Peter Ryan the risk of a double dip recession because on the Sydney outbreak not spreading from Sydney.