Ministers from the 11 main countries that form the "Friends of Syria" group have agreed "to provide urgently all the necessary material and equipment to the opposition on the ground".
The group, which was meeting in Doha, Qatar, said they would channel the aid through a Western-backed rebel military command.
They also condemned "the intervention of Hezbollah militias and fighters from Iran and Iraq" and demanded that they withdraw immediately.
More top news
The Government's stance risks a negotiating car crash with the EU, as it refuses to acknowledge risks over the Irish border.
Sunshine and a soaking
Do children need more mental health support? One primary school says the answer is yes - and pupils are queueing up to share their troubles.