Sentence 1: russian president vladimir putin states that the decision to cease implementation of the conventional forces in europe treaty is a response to u.s. plans to establish missile defense sites in eastern europe and to nato's failure to ratify an amended version of the treaty. 
Sentence 2: russian president vladimir putin states that the decision is a response to u.s. plans to establish missile defense sites in eastern europe and to nato's failure to ratify an amended version of the treaty.
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