Thirteen Israeli and four Thai nationals released from Hamas captivity arrived in Israel on Sunday and were set to be reunited with their families as part of a crucial hostage deal, which briefly risked falling apart due to a dispute over aid supplies. The short-lived row over aid that threatened the temporary truce to free captives was overcome with the mediation of Qatar and Egypt but it underscored the fragility of the agreement, through which a total of 50 Israeli hostages are to be exchanged for 150 Palestinian prisoners over four days.