NATO member leaders, including U.S. President Donald Trump, gathered Wednesday for a summit in the Netherlands.
They are expected to agree upon a new defense spending target of 5 of gross domestic product.
But Spain announced that it wouldn't be able to reach the target by the new 2035 deadline, calling it "unreasonable." Belgium signaled that it wouldn't get there either, and Slovakia said it reserves the right to decide its own defense spending.
On Tuesday, Trump complained that "there's a problem with Spain. Spain is not agreeing, which is very unfair to the rest of them, frankly."
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