It's the latest indication that the frontline NATO nation is increasingly considering nuclear protection as fears of Russia grow.

Poland's president has called on the U.S. to transfer nuclear weapons to its territory as a deterrent against future Russian aggression, the Financial Times reported on Thursday.

The president of Poland, Andrzej Duda, has repeated his call for the US to base nuclear weapons on Polish soil. In the presidential palace in Warsaw, he told me that it would make Poland stronger and safer,