Given the task definition and input, reply with output. Given a sentence and two mentions from the text (arguments), indicate a phrase (a verb or noun phrase) that describes the relationship between the provided arguments.

Sentence: 'Donald Rumsfeld Seems to Think So The basis of the invasion of Iraq was that Saddam Hussein posed an immediate threat to the United States because ...', Argument/Subject 1: 'saddam', Argument/Subject 2: 'unite state'
pose threat to