10 months ago Dalia Cusnir, the sister-in-law of Israeli hostage Eitan Horn, has urged US envoy Steve Witkoff to "bring an end to this war".
Mr Witkoff is currently on a visit to Israel.
She was speaking to the BBC after France, the UK and Canada separately announced plans to recognise Palestinian statehood.
Eitan Horn was taken hostage by Hamas on 7 October 2023, in which about 1,200 people were killed and 251 others were taken hostage.
The Israeli military launched a campaign in Gaza in response to the Hamas-led attack. More than 60,000 people have since been killed in Gaza, and 154 people, including 89 children, have died from malnutrition, according to the territory's Hamas-run health ministry.
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