US President Joe Biden must speak out against human rights violations by Middle Eastern leaders during his ongoing visit to the region, Amnesty International said Wednesday. Biden must “press for immediate and substantive change” from the leaders of Egypt, Israel, Palestine and Saudi Arabia, the human rights group said in a press release. The US president must call Israel to task for its “system of apartheid against Palestinians”, including the construction of illegal settlements in the West Bank, unlawful killings, and bombing campaigns, Amnesty said. He should also speak out on the Palestini…