A ball of fire billows above buildings in Rafah in the southern Gaza Strip during Israeli strikes on March 27, 2019. Palestinian militants fired three rockets at Israel overnight prompting retaliatory fire from Israel, with the exchanges threatening a Hamas-declared truce. They came after Prime Minister Benjamin Netanyahu said he was prepared for further military action in Gaza, at a highly sensitive time ahead of Israel's April 9 elections.
 / AFP / SAID KHATIB

UN warns Gaza escalation could turn into catastrophic war