Hamas urged Palestinians on Wednesday to march to Jerusalem’s Al-Aqsa Mosque at the start of Ramadan next month, raising the stakes in negotiations for a truce in Gaza, which U.S. President Joe Biden hopes will be in place by then. The call by Hamas leader Ismail Haniyeh followed comments by Biden, broadcast on Tuesday, that there was an agreement in principle for a ceasefire between Israel and Hamas during Ramadan, while hostages held by the militants are released.