Against the greenback, the yen strengthened 0.6% to 158.68 yen per dollar. The euro was up 0.7% at $1.167, while the British pound was up 0.7% at $1.3385. The Australian dollar rose 1.3% to $0.7068 as its New Zealand counterpart rose 1.4% to $0.5810.
Trump has previously threatened a broad attack on Iran’s civilian infrastructure. Markets turned risk-on after the announcement, less than two hours before its deadline for Tehran to reopen the Strait of Hormuz expires.
The US dollar index, which measures the greenback’s strength against a basket of six currencies, was down 1.0% at 98.97, a two-week low. Cryptocurrencies also rallied, with bitcoin up 3.4% to $71,664.41, as ether gained 5.7% to $2,234.78.
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