Federal police are wasting their time on a "futile" investigation into allegations Australian activists were sexually assaulted by Israeli authorities while delivering aid to Gaza, the country's ambassador says.
Eleven Australians took part in the Global Sumud Flotilla to Gaza in May when they were detained in international waters at gunpoint, before being imprisoned and eventually deported from Israel.
Members of the group allege they experienced violence, sexual assault and abuse while in the custody of the Israelis.
