The U.N. and other aid organizations urged western countries to open their borders to Syrians, AFP reports.

In a press conference Saturday, U.N. refugee chief Antonio Guterres called for “all borders to be open to Syrians and in particular to Syrian children.” Guterres added, “borders need to be open everywhere, visa policies need to be open everywhere, family unification programs need to exist everywhere. This is the solidarity that the Syrian people deserve.”

Almost three million people have fled Syria since the conflict began in 2011. Syria’s neighbors have absorbed most of the refugees, and the U.N. called for these countries to receive more help.

Guterres also called on the international community to make more of an effort to end the conflict.

“It is clear that there is no military solution to this war. It is clear that nobody is winning; everybody is losing,” he said.

The Syrian civil war has claimed more than 140,000 lives.