Several U.S. allies rebuffed Donald Trump's call on Monday to ​send warships to escort tankers through the Strait of Hormuz, drawing criticism from the U.S. president, who accused Western partners of ingratitude after decades of support, Reuters reported. 

The U.S.-Israeli war on Iran is in its third week with no end in ‌sight. The critical Strait of Hormuz, through which 20% of the world's oil and liquefied natural gas flow, remains largely closed off, raising energy prices and fears of inflation.

The conflict has already imposed economic costs on U.S. allies, who were not consulted before the airstrikes on Iran and who have endured months of harsh criticism and bellicose threats from Trump since he returned to office, according to Reuters.