The world’s largest cryptocurrency by market value, Bitcoin, rebounded Monday to $101,766 after a four per cent fall at the weekend.

Bitcoin was down by 4.13% at $99,237 at 10:52 AM. ET (1452 GMT) on Sunday.

Ether, the second-largest cryptocurrency, was down by around 8.52% at $2,199.

However, while Bitcoin rebounded to $101,766 at around 8:01 am WAT on Monday, Ether was worth around $2,237 at trading.

The Sunday price crash followed US air strikes on Iran’s nuclear facilities after Israel launched a bombing campaign against Iran earlier this month.

Oil prices surged after a US strike on Iran, and Asian markets traded lower on Monday on concerns of disruption to energy markets.

The dollar strengthened as traders assessed the weekend’s events, with Iran threatening US bases in the Middle East as fears grow of an escalating conflict in the volatile region.

Iran is the world’s ninth-biggest oil-producing country, with an output of about 3.3 million barrels per day.

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When trading opened on Monday, Brent and the main US crude contract WTI both jumped more than four per cent, hitting their highest price since January.

However, they pared these gains, and later in the morning Brent was up 2.1 per cent at $75.43 per barrel and WTI was 2.1 per cent higher at $78.64.

Iran has since vowed retaliation over the bombs American warplanes unleashed at the weekend on its three nuclear sites.

US President, Donald Trump, insisted the attack had “obliterated” Iran’s nuclear capabilities, but other officials said it was too soon to determine how significantly Tehran’s nuclear programme had been impacted.

As the world awaited Iran’s reply, Supreme Leader Ayatollah Ali Khamenei called the bombing campaign Israel launched on June 13 “a big mistake”.

“The Zionist enemy… is being punished right now,” Khamenei wrote on social media.