Trump passed on the invitation of the president of the Ukraine to meet today.
If I have it right, Hillary accepted?
Interesting point. It was obviously a huge potential to build relevance and experience on an international level. OTOH, there are many that think Empress Dowaga would lead the US into a war with Russia. One of Trump's strengths is the so called "bromance" that he enjoys with Putin.
I was debating the Crimea with the Catholic Bishop here one day, who is a wise man of roughly 65 years old. Crimea has a long and storied history where it has changed hands several times, and if anything, is Cimmerian territory, being neither Russian nor Ukrainian. The Crimea, two and a half centuries ago, became part of Russia, having been relased from the Ottoman empire, it because a region with autonomous rule and joined with Russia in 1783. The territory itself wasn't handed over to Ukraine until 1954 by Krushev.
Trump was correct in avoiding this due to what can be gained by a useful relationship with Trump, especially when Ukraine relies on Russia for a number of things, especially natural gas. Trump had too much to lose and not enough to win, being that the subject certainly would have presented itself.
Hillary OTOH, has nothing to lose given the far flung and unsubstantiated rumors of a Russian hacker leaking the Democratic party's misdeeds. Being in the situation she is in, can only benefit from a relationship with Ukraine.
Trump could have went, played a subdued hand of remaining neutral, but that would have been perceived as weakness, especially by the Leftist media and even by his own supporters (Trump is popular because he is seen as unflinching and strong - if he loses that, he loses the election). This was something that he couldn't have won without convincing Putin himself, to give the Crimea back to Ukraine, but from a Russian perspective, that won't happen. Even when Kruschev gave it to Ukraine, the Ukraine was itself a portion of the Soviet Union, so Kruschev was in effect, losing nothing. With the fall of the Soviet Union in 1991, it is not until then, that any of this was even a question of who owned the Crimea. Trump was best to avoid the subject altogether.
Edit: And just now, reading this http://uatoday.tv/politics/ukrainian-president-petro-poroshenko-meets-us-presidential-candidate-hillary-clinton-750168.html
, (three days ago)
they did in fact discuss exactly that:
"Petro Poroshenko informed Hillary Clinton about the situation in Donbas. The Ukrainian Head of State emphasized that Ukraine today fights for freedom and democratic values, which unite the whole democratic world. The interlocutors agreed that consolidated Transatlantic unity and solidarity with Ukraine is important in resisting the Russian aggression. It was also noted the effectiveness of sanction policy against Russia. Petro Poroshenko thanked Hillary Clinton for continuous and firm supportive stance on Ukraine."