British Foreign Secretary Philip Hammond and Iranian Foreign Minister Mohammad Javad Zarif deliver a joint news conference following their meeting in Tehran, on Sunday, as the British embassy is reopened after being shuttered for nearly four years. Abedin Taherkenareh/EPA/Landov hide caption

toggle caption Abedin Taherkenareh/EPA/Landov

Iranian protesters breached the gates of the British embassy in Tehran on Tuesday, tearing down the British flag and ransacking offices. Atta Kenare/AFP/Getty Images hide caption

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