Given the task definition and input, reply with output. In this task, you are given a piece of an article. Your task is to generate a short summary of the text. Try to give the summary in just one sentence.

A senior Russian lawmaker strongly suggested on Wednesday that Moscow has sent troops to Ukraine's Crimea region to protect against any ``armed aggression'' during a referendum on whether Crimea should secede and join Russia.

Bradley Manning received a sentence of 35 years in prison.