JERUSALEM / ISTANBUL Qatar has submitted a new proposal to Israel that includes a 60-day ceasefire in Gaza and a prisoner exchange agreement, Israeli media said on Tuesday. The public broadcaster KAN, citing two unnamed diplomatic sources, said the proposal calls for the release of eight Israeli hostages on the first day of the truce. It also includes the release of two more living hostages on the 50th day of the ceasefire. In addition, the plan outlines the return of the remains of 18 Israeli