US President Donald Trump on Saturday complained that the US is "subsidizing" the military of Middle East ally Saudi Arabia, as well as Japan and South Korea.
The comment, at a West Virginia rally for local candidates of his Republican Party, follows similar jibes at European members of the NATO alliance.
"When you have wealthy countries like Saudi Arabia, like Japan, like South Korea, why are we subsidizing their military?" asked Trump, who pushes an aggressive "America First" policy on trade.
"They'll pay us. The problem is nobody ever asks."
He added that he had spoken to Saudi Arabia's King Salman on Saturday to make the same point.
Saudi Arabia and Japan are major buyers of US-made weaponry, and the US provides intelligence and aerial refueling support to a Saudi-led coalition fighting rebels in Yemen.
Japan and South Korea host tens of thousands of American troops.
Trump said the United States pays "about 60 percent" of South Korea's military.
Last year he suggested Seoul should pay for the $1.0-billion THAAD anti-missile system that the US has deployed on South Korean territory.
Trump has long complained that European members of the North Atlantic Treaty Organization do not pay enough for their own defense, singling out Germany for particular criticism.
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