After months of wrangling, the UN Security Council on Friday is set to vote on a resolution calling for an immediate and sustained ceasefire in the Gaza war, according to diplomats. Consultation on the draft resolution submitted by the US was scheduled for Friday at 9 am (1300 GMT). If the resolution is approved, it would be the first time since the start of the Israeli military operation against the Palestinian Islamist organization Hamas at the beginning of October that the most powerful UN body speaks out in favour of a sustained ceasefire in the Gaza Strip. Since the outbreak of the confli…