They note that without more communication and active confidence-building measures by all sides, increased naval activity in the area raises the risk of wider hostilities.

他们指出，如果没有更多的沟通，以及各方努力建立互信的措施，该地区不断增加的海军活动，将提升引发更广泛敌对行动的风险。

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Senator BARACK OBAMA (Democrat, Illinois): What I think many of us are concerned about is that we stumble into active hostilities with Iran without having aggressively pursued diplomatic approaches, without the American people understanding exactly what's taking place.

NPR: Senators Urge Effort to Engage Iran