Death of Hamas leader Yahya Sinwar will make hostage negotiations 'extremely difficult' and prolong war in the region, experts warn

"Mark Wallace, CEO at United Against Nuclear Iran and former US Ambassador to the UN, told MailOnline Israel could now be gearing up for a 'decisive, very impactful strike on Iran', adding that Israel's operations against Hamas, Hezbollah and the regime in Tehran 'might mean we are approaching a new dawn in the region'."