(Image: Getty)By Kimberley KaoOil jumped during Asian trading hours as fresh tensions over Iran keep markets on edge, weighing on equities and fueling safe-haven assets to new highs.Asian indexes were broadly lower early Thursday, while Brent oil futures rose above US$68 (NZ$111.79) barrel – the highest since September.South Korea’s Kospi fell 1.4% before paring some losses to trade 0.2% lower, while Australia’s S&P/ASX 200 lost 0.8% and Taiwan’s Taiex was 0.3% lower. Japan’s Nikkei Stock Average declined 0.1%.Unpredict...