As it happened: Gaza conflict intensifies

Key Points

• Gaza suffers highest death toll and most intense shelling since the launch of Israel's offensive
• At least 87 Palestinians are said to have been killed on Sunday, 60 in one neighbourhood alone
• Israel's military confirms the deaths of 13 soldiers overnight after Hamas claims a major attack
• Gaza militants are continuing to fire rockets into Israel, with one landing in the city of Ashkelon
• Israel earlier said it had expanded its operation - launched 13 days ago - against Hamas militants
• All times BST (GMT +1)