The Salt star, a special envoy for the United Nations High Commissioner for Refugees (UNCHR), appeared before a parliamentary committee at London's House of Lords on Tuesday (08Sep15) to share a progress report on her Preventing Sexual Violence Initiative (PSVI), which she launched with former British Foreign Secretary William Hague in 2012 in a bid to crack down on sex attacks in trouble spots around the world.

Addressing committee members at their first evidence session, Jolie, who was joined by Hague, warned the violence will only get worse as leaders of terror group ISIS are using the attacks as "a very effective weapon", which is "destroying communities and families".

She added, "They are dictating it as policy... beyond what we have seen before."

Jolie, who makes frequent visits to refugee camps in Africa and the Middle East, went on to share the harrowing stories of women and young girls she has met in war zones, who have repeatedly been subjected to the violence, revealing some had been sold into sexual slavery for as little as $40 (£26).

She continued, "Laws need to change, policies need to change, governments and leaderships need to come together and that will make the real change."