From the AP: For now, the U.S. has brought six mobile launchers for medium- to high-range Patriot missiles to Poland, but not the missiles themselves — similar to having a gun but no ammunition.

The U.S. ambassador to Poland, Lee Feinstein, said missiles might arrive later. He, too, stressed that the equipment is only meant for training the Polish military and that Russia is not threatened.

"This is an entirely defensive weapons system and they pose no threat to any country," Feinstein said.

[Polish Defense Minister Bogdan] Klich said the Patriot battery has political and symbolic importance for Poland — "political because it’s tied to Poland’s security. Symbolic because American soldiers for the first time will be stationed on Polish soil for a longer period of time."  (photo: Czarek Sokolowski/AP)

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