Basic supplies must reach the most vulnerable people in Gaza and international humanitarian law must be respected, said European Council President Charles Michel on Thursday.
"Universal values and human dignity. Always and everywhere. This is the core of the EU," said Michel on X.
Over 1,200 Palestinians and 1,300 Israelis have been killed since the start of the Israel-Palestine conflict on Saturday.
In a dramatic escalation of Mideast tensions, Israeli forces have launched a sustained and forceful military campaign against the Gaza Strip, a response to a military offensive by the Palestinian group Hamas in Israeli territories.
The conflict began when Hamas initiated Operation Al-Aqsa Flood against Israel, a multi-pronged surprise attack including a barrage of rocket launches and infiltrations into Israel via land, sea, and air, which Hamas said was in retaliation for the storming of the Al-Aqsa Mosque in occupied East Jerusalem and Israeli settlers' growing violence against Palestinians.
In response to Hamas' actions, the Israeli military launched Operation Swords of Iron against Hamas targets within the Gaza Strip.
Israel's response has extended into cutting water and electricity supplies to Gaza, further worsening the living conditions in an area that has reeled under a crippling siege since 2007.