Claim: Iranian lawmakers threatened to take U.S. power grids offline less than two weeks ago from the end of last month.
Verdict: Correct (90% confidence)
Explanation: According to Iran International, an Iranian lawmaker threatened on July 31, 2026, that any attack on Iran's electricity infrastructure would prompt retaliatory strikes against U.S. power grids. This source directly supports the claim by confirming both the occurrence of the threat and the timeframe, which is less than two weeks from the end of July. No sources contradict this specific claim, and the evidence aligns with the core proposition, leading to a correct verdict.