The U.S. President’s adviser on Homeland Security, Robert O’Brien, has shared the stance of the U.S. Senator David Perdue, for reconsidering military presence in Kosovo in the case that the tariff on products made in Serbia will not be dropped.

According to the Senator Perdue, the U.S. should reconsider its military presence in Kosovo if the tariff is not dropped and if Kosovo doesn’t show full commitment to peace with Serbia.

“For over two decades, US forces have helped keep the peace between Kosovo & Serbia. Now, with historic progress in sight, Kosovo must do its part & abolish all duties imposed on Serbia. If Kosovo is not fully committed to peace, then the US should reconsider its presence there,” the US senator wrote on Twitter.

The U.S. President’s envoy for Kosovo-Serbia dialogue, Richard Grenell, has also agreed with the senator’s proposal on Twitter, and shared it further.