The foreign ministers of 25 Western nations have slammed Israel for “drip feeding” aid into the Gaza Strip, as the health ministry in the territory said that more than 1,000 people have been killed seeking humanitarian relief there since late May.

Israeli strikes killed at least 20 people in Gaza, Palestinian health officials said Tuesday, as Israel pushed on with a new incursion in an area that had largely been spared heavy fighting during the 21-month war.