There is a significant degree of tension over whether territorial integrity or self-determination takes precedence in international law. If international monitors were to verify the referendum is conducted fairly then things may start to swing in favour of self-determination - and the USA will find out what happens when they play with the pros.Point 2, under the Constitution of Ukraine - Title III Elections. Referendum, it is quite clear that in Article 73 "Alterations to the territory of Ukraine shall be resolved exclusively by the All-Ukrainian referendum" which brings us to Articles 69, 70 but most importantly 72 which quite clearly states "The All-Ukrainian referendum shall be called by the Verkhovna Rada of Ukraine or by the President of Ukraine in accordance with their powers determined by this Constitution.
The All-Ukrainian referendum shall be convened as a popular initiative at the request of at least three million citizens of Ukraine eligible to vote, provided that the signatures in favour of the referendum have been collected in at least two-thirds of the oblasts with at least 100,000 signatures gathered in each oblast"
This means the Constitution of Ukraine says in effect that any referendum for the Crimea to secede to Russia would be illegal UNLESS The All-Ukrainian referendum is convened meaning every Ukrainian citizen would have to vote to permit or to deny the Crimea to secede to Russia and there's no way the Crimea government which in itself is illegal can hold a legal referendum
The unilateral declarations of independence from Yugoslavia by Croatia and Slovenia will be very instructive here - both share similarities of regional majorities not having their interests served by the arrangements which existed to give them some amount of autonomy while respecting territorial integrity. Both had their declarations of independence internationally recognised.
We must be careful to avoid canonising Yulia Tymoshenko - there is waaaaaaay too much stench of corruption around her. The Ukrainian people recognise this, but when faced with a bigger ******* (e.g. her former coalition partner Yanukovych) they choose to hold their noses and tolerate it so long as they need her sole redeeming quality - that she's reasonably effective at rallying enough people and marshalling her business connections to depose unpopular incumbents who are a little marginally worse. Now that Yanukovych has been deposed she should be sent back to prison if she ever starts getting too close to getting back into the national power structures.Well, you're not comparing like-with-like. In the Weimar Constitution, the President was more of a figure-head. In Ukraine (at the time of the 2012 election) the President was a directly-elected post with political power.
The largest party in the 2012 election was the Party of Regions, with 42% of the vote and 185 (out of 445 seats). The President (elected in 2010) also came from the same party. But were they free and fair? Well you'll have to make up your own mind, but look what the government did to former PM (and losing 2010 presidential candidate) Yulia Tymoshenko...
The leader that the Ukraine needs now that the constitution has been restored is Viktor Yuschenko, and all indications seem to be that he will run for President next year and almost certainly win.