UK and US stock markets rose but Asian indexes tumbled on Wednesday as oil and gas prices remained volatile over fears the US-Israel war with Iran may drag on. The FTSE 100 index of the largest firms listed in London as well the big US and European indexes all rose on Wednesday following two days of sliding share prices, while several Asian indexes plummeted for a third day. Oil and gas prices dipped on Wednesday but were still much higher than when the conflict started, after shipping traffic