Hamas on Wednesday blasted as unbalanced the terms of international truce proposals for the deadly Israeli bombardment of its Gaza Strip stronghold.

"The current efforts aimed at ending the combat and installing a ceasefire put the executioner and the victim on equal footing," said Hamas spokesperson Fawzi Barhum in a statement.

"International and Arab efforts must focus on ending this aggression, opening the border crossings and rebuilding Gaza," he said.

"All Arab and international intervention must focus on stopping the aggression, lifting the blockade and opening all border crossings," he said.

A statement by the European Union released after a foreign minister meeting in Paris on Tuesday began by a demand of an "unconditional" stop to Hamas rocket attacks.

"There must be an unconditional halt to rocket attacks by Hamas on Israel and an end to Israeli military action," the EU statement said.