Poland’s president has called on the US to transfer nuclear weapons to Polish territory, the Financial Times reports.

Andrzej Duda said it was “obvious” that President Donald Trump could redeploy US nuclear warheads stored in western Europe or the US to Poland, a proposal the Polish leader said he recently discussed with Keith Kellogg, US special envoy for Ukraine.

“The borders of NATO moved east in 1999, so 26 years later there should also be a shift of the NATO infrastructure east. For me this is obvious,” Duda said in an interview with the Financial Times. “I think it’s not only that the time has come, but that it would be safer if those weapons were already here."