The GBP/USD is trading under pressure at the US opening bell on pro-dollar environment amid risk aversion. The US Dollar is rising across the board as tensions in Ukraine, weak stocks opening and AUD/USD break down are fueling the Greenback. Currently, GBP/USD is trading at 1.6788, down 0.21% on the day, having posted a daily high at 1.6838 and low at 1.6781. The FXStreet OB/OS Index is reflecting oversold hourly conditions, while the FXStreet Trend Index is slightly bearish. GBP/USD levels The GBP/USD is testing daily lows around 1.6780, with supports at 1.6775 and 1.6720. On the upside, resistances come at 1.6800, 1.6840 and 1.6875.