WASHINGTON, Sept. 3 -- A growing majority of Americans oppose the US military campaign against Iran, according to a new poll. The survey found that 54% oppose the military action, while 39% support it. Opposition has reached its highest level in six months. The poll was conducted by Global Strategy Group for Navigator Research. It tracks American views on politics, the economy and major policy issues. The findings show growing public concern about the conflict and its possible consequences.

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Opposition was particularly strong among independent voters. About 66% of independents said they opposed the US military campaign. The poll also found that 58% of Americans believe t...