The FTSE 100 (^FTSE) and European stocks tumbled on Friday as US officials reported Israeli retaliatory strikes on Iran. Traders have been cautiously watching Israel’s reaction to Iran's drone and missile attack last weekend, with concerns that a worsening conflict in the Middle East could disrupt oil supplies. Brent Crude (BZ=F) jumped as much as 3.5% on the back of the news and is now trading 1% higher at $87.97. London’s benchmark index was 0.7% lower in early trade Germany's DAX (^GDAXI) dipped 1% and the CAC (^FCHI) in Paris headed 0.7% into the red The pan-European STOXX 600 (^STOXX) was down 0.7% Wall Street is set to open in negative territory as S&P 500 futures (ES=F), Dow futures (YM=F) and Nasdaq futures (NQ=F) were all lower UK retail sales stalled unexpectedly in March Revenues at 888 beat forecasts for past quarter Follow along for live updates throughout the day: Stocks in Asia plunged overnight as tensions in the Middle East weighed on sentiment. The Nikkei (^N225) tumbled 2.7% on the day in Japan, while the Hang Seng (^HSI) fell 0.9% in Hong Kong. The Shanghai Composite (000001.SS) was 0.3% down by the end of the session. It came as...