A former prisoner told the BBC's Orla Guerin and cameraman Nicolas Hameon how IS tortured captives.
Israel has sent more troops into Gaza after resuming airstrikes on what it calls "terror targets".
More than 400 people have been killed in Israeli strikes on Gaza, according to the Hamas-run health ministry. BBC Verify’s Nick Beake has been assessing footage of the strikes and building a picture of the damage done.
The Israeli military says it is hitting "terror targets" across Gaza.
Thousands of Syrians have crossed into Lebanon from the provinces of Latakia and Tartus.
The first of an estimated 2,000 Gazan children needing medical treatment arrive in Jordan.
Four of the men were kidnapped on 7 October 2023, while the two have been held for a decade.
The grandson of Oded Lifschitz, whose body was returned to Israel this week, speaks to the BBC.
Zakaria, 11, volunteered at a busy Gaza hospital during the war - one of three children in a new BBC documentary.
Israel released 369 people on Saturday as Hamas freed three more hostages
Alexander Troufanov, Yair Horn and Sagui Dekel-Chen were handed over to the Red Cross on Saturday morning.
Some 180 prisoners are being freed in exchange for three Israeli hostages.
Or Levy, Ohad Ben Ami and Eli Sharabi are returning home after being released in Gaza on Saturday.
The men were all taken captive during the 7 October attacks and have been held in Gaza for 16 months.
Lib Dem leader Ed Davey called on the PM to reiterate to the White House that the UK is committed to two-state solution.
The former solider collected information and passed it to Tehran, before escaping from HMP Wandsworth.
Three freed hostages are returned to Israel after a ceasefire between Israel and Hamas came into force.
Doron Steinbrecher, 31, Emily Damari, 28, and Romi Gonen, 24, were seen getting out of a Red Cross vehicle, in footage released by the Israeli Defense Forces.
Feras Killani grew up in Yarmouk in Damascus, which saw brutal fighting between rebel and government forces.
Orla Guerin visits Al-Sina prison in north-eastern Syria, where many suspected fighters have been held for years.
Sharaa led the rebel offensive that toppled the Assad regime in Syria less than two weeks ago.