Warplanes continue to pound the Eastern Ghouta as the UN Security Council meets.
Iran's deputy foreign minister dismisses warnings about its presence in Syria as "propaganda".
PM Benjamin Netanyahu says his nation halted an "unimaginable slaughter" last year.
Broadcast time 17:06 GMT - 18:00 GMT
Broadcast time 19:06 GMT - 19:30 GMT
Broadcast time 20:06 GMT - 21:00 GMT
Broadcast time 22:06 GMT - 22:20 GMT
Take the Brain of Britain quiz
Sign up for our newsletter