The Israeli military has confirmed carrying out the attack.
Much of Khan Younis, once home to hundreds of thousands, has been completely bulldozed and destroyed by Israel's military.
It comes as teams are being sent to Egypt to discuss a potential ceasefire
Senior US officials currently believe an attack by Iran is "inevitable" – a view shared by their Israeli counterparts.
"If we don't see the changes that we need to see, there will be changes in our own policy."
"You have to have a victory and it's taking a long time."
Seven people from a charity group were killed.
Charity groups have stopped taking in food because it's become too dangerous.
The club was undergoing renovations.
