Prime Minister Donald Tusk has declared his country ready to take part in a revised US missile defense plan. Tusk told visiting US Vice-President Joe Biden that Poland was "ready to participate." Poland will now host a small US base equipped with short-range missiles. It replaces a much bigger system favored by former President George W Bush. Biden insisted the new system was better than the old version and would mean "better security for Poland." President Barack Obama's decision to scrap Bush-era plans to build a defense system in Poland and the Czech Republic caused some alarm in those countries, leading some to wonder whether Washington was still listening to Central and Eastern Europe's concerns about Russia, says the BBC's Adam Easton in Poland. (BBC)

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