Russian-Israeli researcher citizenship was kidnapped by Iranian-backed militia Kataib Hezbollah in Baghdad in March 2023.

Mr Witkoff was initially named as Donald Trump's Middle East envoy, but has since been involved in negotiations with Russia about the war in Ukraine. He is now heading to Moscow for further talks, but ...

The mystery surrounding the researcher's whereabouts complicates Iraqi Prime Minister Muhammad Shia al-Sudani's relationship ...