WARSAW, July 19 (Xinhua) -- Poland plans to make formal its alliance with the United States in an agreement regarding the possible deployment of a U.S. missile defense shield, the country's security chief said Thursday.

    "We would like to have a sort of written and binding agreement," Wladyslaw Stasiak, the head of the National Security Bureau, was quoted by the PAP news agency as saying.

    During negotiations between Warsaw and Washington, the two sides mainly discussed the status of the missile defense base and "a broader security context," he said.

    As for "security aspects," Stasiak said Poland intends to participate in U.S. strategic decisions involving the central European nation.

    He added that the extraterritorial status of the base and the non-application of the Polish jurisdiction to its crew were out of the question.

    "We discussed how we could execute the observance of the Polishlaw," Stasiak said.

    Poland and the United States have resumed talks on the missile defense shield.

    On Monday, Polish President Lech Kaczynski, who was on a visit to Washington, said after meeting with his U.S. counterpart George W. Bush that the decision to base the missile defense system in Poland had been practically taken, but there are still many problems to be discussed.

    The United States unveiled its plan in January to place a radar system in the Czech Republic and 10 interceptor missiles in Poland, as components of its missile defense shield.