DUBAI, April 24 -- President Donald Trump has ordered the US military to "shoot and kill" small Iranian boats that deploy mines in the Strait of Hormuz, he said on Thursday, a day after Iran again displayed its ability to thwart traffic through the channel. Trump's post on social media came shortly after the US military seized another tanker associated with the smuggling of Iranian oil, ratcheting up a standoff with Tehran over the strait through which 20% of all crude oil and natural gas traded passes. "I have ordered the United States Navy to shoot and kill any boat, small boats though they may be ... that is putting mines in the waters of the Strait of Hormuz," Trump posted, adding that US minesweepers "are clearing the Strait right now....