It appears that the UN peacekeepers on the Golan will have to pull out if weapons are sent to the rebels:

The future of the long-running UN peacekeeping mission on the strategic Golan Heights between Syria and Israel has been thrown into question as a result of Britain’s decision to defy most of the EU and force the lifting on the two-year arms embargo on Syria.

The Austrian chancellor, Werner Faymann, and vice-chancellor, Michael Spindelegger, said on Tuesday they would probably pull out more than 300 peacekeepers if Britain helped arm the rebellion against Bashar al-Assad’s regime.

A withdrawal would heighten the growing sense of greater Middle East crisis, creating a vacuum on the strategically vital heights which the Israelis would be tempted to fill quickly.

Vienna stressed there was no need for haste as no weapons supplies were yet flowing. While declaring it had no intention of supplying arms immediately, Britain reserved the right to do so. Britain can start shipping guns and missiles to Syria on Saturday when the embargo lapses. But it has pledged to give negotiations another chance in Geneva next month while reserving the option of arming those in the fractious Syrian opposition it deems “moderate” from August.

And while we are at it, we should note that the EU move has prompted Russia to announce that it will be delivering advanced SAMs to Syria:

Russia said on Tuesday that it would supply one of its most advanced anti-aircraft missiles to the Syrian government hours after the EU ended its arms embargo on the country’s rebels, raising the prospect of a rapidly escalating proxy war in the region if peace talks fail in Geneva next month.

Israel quickly issued a thinly veiled warning that it would bomb the Russian S-300s if they were deployed in Syria as such a move would bring the advanced guided missiles within range of civilian and military planes in Israeli air space.

“The shipments haven’t set out yet and I hope they won’t,” Moshe Ya’alon, the Israeli defence minister, said. “If they do arrive in Syria, God forbid, we’ll know what to do.

Russia’s deputy foreign minister, Sergei Ryabkov, argued that the delivery of the S-300 system had been previously agreed with the Syrian government in Damascus and would be a “stabilising factor” that could dissuade “some hotheads” from entering the conflict. That appeared to be a reference to the UK and France, who pushed through the lifting of the EU embargo on Monday night and are the only European countries currently considering arming the rebel Free Syrian Army (FSA).

Of course, the S-300 is useless against the rebels, but it would be pretty useful to deter NATO from acting against Syria.

BTW, I understand why the Israelis are freaking. Depending on model (the S-300 is a complete air defense system with a variety of interceptors), the range of the missile could be as much as 200 km, which would cover about 2/3 of Israeli air space from Quneitra.