FXStreet (Edinburgh) - The sterling is now accelerating its daily decline vs. the dollar, with GBP/USD currently breaching the 1.4300 key support. GBP/USD capped at 1.4360 The pair is now fading part of yesterday’s significant upside to the 1.4360/65 area, where it found strong resistance and provoked the current leg lower to the 1.4300 neighbourhood. In the meantime, the pair keeps the bearish tone intact for the time being and suffering the return of the risk aversion to the markets. Ahead in the NA session, the FOMC meeting will take centre stage, with forecasts pointing to a cautious tone from the Committee’s statement. GBP/USD relevant levels As of writing the pair is retreating 0.47% at 1.4289 with the immediate support at 1.4079 (multi-year low Jan.21) ahead of 1.4049 (monthly low feb.2009) and finally 1.4000 (psychological level). On the other hand, a breakout of 1.4433 (20-day sma) would open the door to 1.4659 (50% Fibo of 1.5240-1.4079) and then 1.4829 (55-day sma). Trade Federal Reserve interest rate decision with FXStreet - Live Coverage Trade the US GDP with FXStreet - Live Coverage For more information, read our latest forex news.