With fears rising that a wider war could break out in the Middle East, the United States has steadily been moving Navy forces closer to the area, including two aircraft carrier groups and a guided-missile submarine. This is a clear effort to deter Iran and its allies from more intense attacks on Israel. While the United States has said these moves are to help defend Israel and avert a wider regional war, a senior U.S. official said on Saturday night that the American military was better positioned to address a threat from Iran. 

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