Poland's Defense Minister Tomasz Siemoniak says the U.S. will "soon" take a decision to place heavy army equipment in warehouses in Poland for decades to come.

Poland believes its security is threatened by Russia's hostile actions in eastern Ukraine and is seeking permanent U.S. and NATO presence on its territory as a deterrent.

Siemoniak tweeted Sunday that he and the U.S. defense secretary held talks about placing U.S. heavy army equipment in Poland last month.

"Decisions are near," he wrote.

Siemoniak did not specify numbers or what type of equipment was being discussed. The White House and the U.S. defense secretary need to approve.

Poland's General Command spokesman, Col. Artur Golawski, said on Twitter that efforts have been taken to find locations where the equipment could be placed.