Germany, traditionally a staunch ally of Israel, has been increasingly critical of Israel’s actions in Gaza. But while it has insisted that Israel must do more to increase aid supplies, Wadephul addressed his appeal to end the war primarily to Hamas.

The German foreign minister called the situation in Gaza "beyond imagination" and said Israel needs to show it is not pursuing a policy of expulsion and annexation. Meanwhile, a US special envoy prepares to visit Gaza.

"A negotiated two-state solution remains the only path that can offer people on both sides a life in peace, security, and dignity," he said in a statement issued shortly before his trip on Thursday to Israel and the Palestinian territories.