Polish Prime Minister Donald Tusk said Wednesday his country was unfazed by Russian threats to point missiles at a planned US missile shield site in Poland.

"If we were to react nervously to everything that is said to the east of us then we would have to … be nervous everyday," Tusk told reporters in Stockholm following talks with his Swedish counterpart Fredrik Reinfeldt.

"Nervous comments from Russian politicians or generals come and go," he added.

Last week a Russian general, Nikolai Solovtsov, was quoted by Interfax as saying: "I can't exclude that if such decisions are taken by our military-political leadership, the missile shield in Poland and the Czech Republic and other such objects could be chosen as designated targets for some of our inter-continental ballistic missiles."

Tusk said he had discussed the issue with Russian Foreign Minister Sergei Lavrov during the latter's visit to Warsaw last week.

"In my talks with Minister Lavrov I said that both Russia and Poland should avoid these kinds of comments and actions which can have negative consequences and Minister Lavrov agreed with me," he said.

Moscow sees the plans for new US missile defence facilities in central Europe as part of an effort to encircle Russia.

Washington insists the planned facilities are directed against "rogue states" such as Iran and in no way threaten Russia.