You're right, but Iran, Russia, China and even the Syrian government have all agreed to an election. The stance of Iran clearly supports an election monitored globally, but it depends on what you mean by globally. Globally means the USA, the UK, France, Germany, Israel, Arabs, Turkey, Iran, Russia, China, North Korea and others but when western powers talk about international concerns they only consider themselves as the international community. That's the first problem! the second problem is the unfriendly and counter-productive stance of the west, Arabs and Turkey that instead of pushing for a democratic and civilized solution they are talking about arming the rebels which will surely destabilize Syria for months to years if they do so. Even if the regime of Assad falls, then Syria will turn into an insecure country like today's Libya with lots of more problems. How do you expect the Syrian government to accept you guys if you have already jeopardized everything by your irrational rhetoric? From the very beginning, the west has threatened Syria with sanctions, military interference and other sorts of serious threats that has made the gap between Syrian government and others wider. That is counter-productive. Not only that doesn't work, but it complicates things further.
On the Syrian issue, Turkey, Western countries, Arab states (excluding Iraq, Lebanon and some few Arab states that support Syria or are indifferent) have only themselves to blame. Don't blame others if you can't handle the situation through diplomacy and you're impotent to interfere militarily.