TEL AVIV/CAIRO, July 4 (Reuters) - At least 15 Palestinians were killed overnight in an Israeli airstrike in Gaza, according to local health officials, as U.S. President Donald Trump said he expected Hamas to respond to his "final proposal" for a ceasefire in Gaza in the next 24 hours.

President Donald Trump previously said Israel had agreed to a ceasefire deal, but Israeli leader Benjamin Netanyahu still has not confirmed Trump’s claim.

Hamas and Israel staked out their positions ahead of expected talks on a Washington-backed ceasefire proposal.