The evidence suggests Saudi Arabia is the most influential member of OPEC, citing the U.S. Energy Information Administration. While the UAE is noted as a major player, the evidence does not support the claim that the UAE was the *most* influential member after Saudi Arabia. The claim is based on a specific assertion not corroborated by multiple independent sources.

The evidence provided for this claim consists only of general Wikipedia entries about Saudi Arabia and unrelated search results. There is no specific evidence or multiple sources confirming the precise figure that Saudi Arabia and the UAE together control a majority of the world's total spare capacity, exceeding 4 million barrels per day. Therefore, the claim cannot be corroborated.

The evidence provided for this claim is limited to a single source (implied quote from Goldwyn via web search). While the claim is specific, it is not corroborated by multiple independent news organizations, preventing a 'corroborated' verdict.

The evidence mentions the UAE's decision to leave OPEC in the context of regional tensions and the Iran-backed Houthi rebels, but it does not establish a direct causal link that the exit *followed* weeks of missile and drone barrages by Iran. This specific sequence of events is reported in a single context, making it difficult to corroborate.