Poland's Prime Minister Donald Tusk said, according to Reuters, he would tell U.S. Vice President Joe Biden when they meet in Munich on Saturday that Warsaw was ready to host parts of the U.S. missile shield system, as agreed in August. "I will definitely tell Vice President Biden tomorrow in Munich we are ready to participate in this project, a U.S. project," he told a news conference, referring to installing 10 ground-based interceptors as part of a global missile defense. "When we agree something with our ally, we keep our promise," Tusk said. Washington says the system will protect it and its European allies from terrorist attack and so-called 'rogue' states.