Detailed Analysis:

• Claim: Palestinians celebrate on the streets of Khan Younis after the first phase of a Gaza peace deal was agreed.
• Verification Source #1: Mentions Einav Zangauker reacting after Trump's announcement, suggesting a connection to Gaza events and Trump, but doesn't directly confirm celebrations in Khan Younis.
• Verification Source #3: Similar to source 1, mentions Einav Zangauker's reaction, linking Gaza and Trump's announcement, but lacks direct confirmation of celebrations.
• Verification Source #5: Mentions Einav Zangauker's reaction and 'Trump's Gaza peace plan?', suggesting a connection, but doesn't confirm celebrations.
• Assessment: Unverified. While the sources link Trump's announcement to events in Gaza, they do not directly confirm the claim of celebrations in Khan Younis. The claim is plausible given the context of peace deals, but requires further verification.
• Claim: Trump's announcement led to the agreement of the first phase of a Gaza peace deal.
• Verification Source #1: Mentions 'Trump's announcement' in relation to reactions concerning Gaza, implying a connection to peace deal discussions or developments.
• Verification Source #5: Poses the question 'Trump's Gaza peace plan?', suggesting Trump's involvement in a peace initiative.
• Assessment: Potentially accurate, but lacks specific details. The sources suggest Trump's involvement in Gaza peace efforts, but the exact nature and impact of his announcement on the 'first phase' of a deal are not explicitly confirmed. More information is needed to assess the accuracy of this claim fully.