SYDNEY: Asian stock markets were swept up in a global rout on Friday, tracking Wall Street lower as the threat of a protracted energy shock out of the war-torn Middle East sent borrowing costs spiralling higher.

Investors took a modicum of comfort from U.S. President Donald Trump's decision to extend his ultimatum to strike Iranian power plants by 10 days, after pushing back his initial 48-hour deadline by five days. Brent crude futures fell 1% to $107.07 a barrel having jumped nearly 6% overnight.