币界网报道：[The US dollar is expected to record its biggest one-day gain in a month] According to the Coinnet report, the US dollar is expected to record its biggest one-day gain in a month on Friday as investors bought back the dollar after Israel launched an attack on Iran, triggering Iranian retaliation. At first, the safe-haven currencies Swiss franc and yen rose, but then the US dollar recovered its losses. The US dollar has always been the ultimate safe haven in times of geopolitical or financial turmoil. The US dollar rose nearly 0.9% against a basket of major currencies, with the euro, pound and Australian dollar falling particularly sharply. The US dollar index rose 0.85%, expected to record its biggest one-day gain since May 12. City Index strategist Fiona Cincotta said the US dollar is returning to its traditional safe-haven role, but if the situation eases over the weekend, the boost may not last long.