NATO patrols and ships allowed these arms to go through and they were enormous. The Bosnian Muslims and Croats became extremely well equipped during the so-called arms embargos. Additionally the foreign Mujahadeen were coming already from the start of the war in spring of 1992. There are even photos of them in Bosnia the summer of 1992 and reported fights with the UN.
Many of the arms were coming in from "charities" and mercenaries were often "retired" British and other NATO country soldiers who liasoned with the UN British contigent there. The UN was aiding the Muslims and spying and sabotaging the Serbs.
The Yugoslav army pulled out in late June 1992 and left the airport to the UN on condition it be used for humanitarian purposes only. Instead it was used to bring in arms and fighters.
Don't say that the international community wasn't doing anything when they were acting the whole time on behalf of the Muslims and propaganda purposes.
Then you had the Bosnian Muslim president, Alija Izetbegovic, who had been jailed years before the war for seeking out Islamic countries' help for the Bosnian Muslims. He wrote a book about how Muslims couldn't co-exist with others within a state and eventually they needed to take full control.
And, don't forget that the Iranians were helping the Bosnian Muslims.
In other words, this demonstrates the duplicity of the Clinton administration to the extent that if the Iranian were helping Hezbullah (at the same time), that's a big NO NO. But if the Iranian helped the Bosnian Muslims then they turn a blind eye - see the difference.