UNITED NATIONS (AP) — The United Nations chief launched a $397 million appeal Tuesday to help nearly five million survivors of last week’s devastating earthquake in rebel-held northwest Syria who have received very little assistance because of deep divisions exacerbated by the country’s 12-year war.

Secretary-General Antonio Guterres announced the appeal a day after he welcomed an agreement between the UN and Syrian President Bashar Assad to open two new crossing points from Turkey for an initial period of three months. The UN has only been allowed to deliver aid to the northwest Idlib area through a single crossing at Bab Al-Hawa — at Syrian ally Russia’s insistence. Since the quake, the UN says 84 trucks have gone through Bab Al-Hawa.

Guterres said the devastation from the magnitude 7.8 earthquake that ravaged southern Turkey and northwestern Syria on February 6 “is one of the worst in recent memory,” and “we all know that lifesaving aid has not been getting in at the speed and scale needed.”

He said the $397 million will provide “desperately needed, life-saving relief for nearly five million Syrians — including shelter, health care, food and protection” for three months.

Guterres said the UN is in the final stages of preparing an emergency appeal for quake-ravaged southern Turkey. UN spokesman Stephane Dujarric said the appeal will be launched “probably in the coming days.”

He urged the international community to provide the emergency funding without delay, saying: “The human suffering from this epic natural disaster should not be made even worse by manmade obstacles — access, funding, supplies.”

The secretary-general said aid to Syria must get through by all routes to all areas without restrictions.

A senior UN World Food Program official warned that food insecurity in afflicted parts of Syria had been rising drastically even before the earthquake struck.

“It was very bad before. Now it’s dramatic,” said Corinne Fleischer, the agency’s Middle East Director.

“Half of the population faces hunger. And that’s the worst that we’ve seen since the beginning of the crisis in Syria. Even at the height of the war, we didn’t have 12 million people food insecure,” she said in an interview with the Associated Press.

Guterres announced that an 11-truck convoy was on the move to go through one of the newly opened crossings at Bab Al-Salam, “with many more to come.” He said the second new crossing at Al Raée is also open, “and goods are flowing.”

Dujarric said the convoy went through the crossing without any obstacles and “we’re very optimistic that things will move quickly.” He noted that the two crossings have been used by relief organisations not affiliated with the UN and the roads are in better condition than those leading to Bab Al-Hawa.

The announcement of the two additional crossings from Turkey came as the UN Security Council was meeting for the first time Monday afternoon on the difficulties of getting aid to northwest Syria.

The UN has also been trying to send a convoy to the northwest across conflict lines within Syria, but it hasn’t gotten a green light from all parties. The convoy has reportedly been blocked by Hayat Tahrir al-Sham, a rebel group with ties to al-Qaida that controls part of the northwest.