The U.S. dollar firmed on Friday, underpinned by worries that the Iran war could lead to an energy-driven inflation spike.

By 05:26 ET (09:26 GMT), the U.S. dollar index, which tracks the greenback against a basket of currency pairs, had risen by 0.4% to 100.13. The euro weakened against the dollar by 0.5% to $1.1459, while the British pound softened 0.5% to $1.3275.

Bitcoin ticked up slightly on Thursday, as the crypto continued to be mostly unaffected by the developments in the Middle East.

The world’s largest cryptocurrency last traded 2% higher at $71,653.5 by 20:23 ET (00:23 GMT).

Bitcoin appears to be consolidating around the $70,000 mark as markets digest the ongoing war between the U.S., Israel, and Iran.

Oil prices rose sharply on Thursday and hit the key $100 per barrel level, after Iran’s new leader Mojtaba Khamenei warned that a critical waterway for global shipping will remain closed as the U.S. and Israel continue an assault of the country.   

Brent oil futures, the global benchmark, rose 8% to $99.34 a barrel by 12:57 ET (16:57 GMT), having earlier hit a session high at $101.57 a barrel. Meanwhile, U.S. West Texas Intermediate crude futures climbed 8.6% to $94.77 per barrel.

Gold prices edged lower on Thursday, as few signs of de-escalation in the U.S.-Israel war with Iran spurred flows into higher energy prices stoked inflation fears.

Spot gold had slid by 0.5% to $5,149.76 an ounce and gold futures had dropped by 0.5% at $5,155.10/oz as of 10:37 ET (14:37 GMT).