A cease-fire in the Libyan civil war has collapsed and foreign shipments to the combatants have resumed, shredding the work of a conference of world leaders who convened in Berlin just eight days ago.

“Battles are raging on all front lines,” Ahmed Mismari, a spokesman for the military forces based in eastern Libya, told reporters over the weekend, according to Reuters.

The United Nations had already warned on Friday of “continued blatant violations of the arms embargo” by unnamed foreign powers who had pledged just days earlier to stop supplying weapons to Libyan clients.

In a statement, the United Nations Support Mission in Libya said, “Over the last 10 days, numerous cargo and other flights have been observed landing at Libyan airports in the western and eastern parts of the country providing the parties with advanced weapons, armored vehicles, advisers and fighters.”