(Bloomberg) -- Bitcoin weakened to its lowest level in more than two weeks as broad macro risks stemming from the US-Iran war prompted traders to cut back their positions.Most Read from BloombergUS and Iran Far From Deal as Bond Rout Piles Pressure on TrumpWinners and Losers From Trump and Xi’s Beijing Summit TalksBillionaire Rinehart Bets $100 Million on US Defense StocksHormuz Oil Flows Creep Higher as More Supertankers ExitUS, Iran Stall on Hormuz Reopening as Oil Supplies TightenThe original