SEOUL, U.S. President Donald Trump has implied that Washington could ask Seoul to increase its contribution to the cost of stationing American troops in South Korea.

Trump called defense cost-sharing with an unidentified country "one-sided, horrible deal," claiming that the U.S. spent US$5 billion in defending the wealthy country and that the country paid $500 million to the U.S.

"I said we're going to call you for much more. You got to pay, you got to pay, not fair. We're defending you and you're rich," Trump said at a rally in Wisconsin on Saturday.

In February, South Korea signed a one-year deal with the U.S. to pay 1.03 trillion won (US$889 million) for the stationing of 28,500 U.S. troops in 2019, up 8.2 percent from 2018.

Trump also said in a Cabinet meeting in February that "they agreed to pay ... $500 million more toward their defense ... Five-hundred million, with a couple of phone calls."

Source: Yonhap news Agency