Analysis Summary:

The article is mostly accurate, reflecting the general sentiment from multiple polls that a majority of Americans disapprove of airstrikes on Iran, while Republicans tend to support them. There's a slight bias towards highlighting the disapproval, but it's not extreme. The claim about concern over a wider war is not directly verifiable from the provided sources.

Detailed Analysis:

• Claim:** "Poll: U.S. airstrikes on Iran backed by Republicans, but disapproval overall" - This is generally supported by the provided sources. Verification Source #2 indicates that approval among Republicans is at 73%. Verification Source #1, Verification Source #3, Verification Source #4, and Verification Source #5 all indicate that a majority of Americans disapprove of the airstrikes.
• Claim:** "Most would see an Iranian nuclear weapon as a serious threat but also voice concern about a wider war." - The first part of this claim, regarding the threat of an Iranian nuclear weapon, is not directly addressed in the provided sources. The second part, regarding concern about a wider war, is not explicitly stated in the provided sources, but it is a reasonable inference given the context of airstrikes and disapproval. This part of the claim is not directly verifiable from the provided sources.

Supporting Evidence/Contradictions:

• Agreement:** Verification Source #1, Verification Source #3, Verification Source #4, and Verification Source #5 all agree that a majority of Americans disapprove of the airstrikes.
• Agreement:** Verification Source #2 supports the claim that Republicans largely approve of the airstrikes.
• Lack of Coverage:** None of the provided sources directly address the level of concern regarding an Iranian nuclear weapon or a wider war.