Today Petro Poroshenko was sworn in as the new president of Ukraine. He is promising to retake military control of the two breakaway regions in eastern Ukraine, now calling themselves the Donetsk Peoples' Republic and the Lugansk ("Luhansk" in Ukrainian as the western media still calls it, but not as it is called within it) Peoples' Republic. There will probably be a renewed effort by him to make the military effort, but there is good reason to expect that it will fail.
The fatal weakness of the Ukrainian military in the region is that it may have suffered a fatal blow in the last two days, the loss of the main border post between Russia and Luhansk/Lugansk, which will now allow an uninterrupted flow of men and material into the breakaway republics. It is now known that major leaders of those self-proclaimed rebel regimes are in fact Russian nationals, some claiming to be "volunteers" to prevent any linking with Putin, and he has withdrawn most of his troops from the border, so nobody can accuse him of directly invading. This is very much an imitation of what he did in Crimea, and with the border post now in control of his people, it will be like in Crimea where the Russian military could easily supply and support from its bases the unofficial Russian military who gained control.
So, the next question will be whether or not these two self-proclaimed republics will remain two or eventually unite into one, presumably dominated by more populous Donetsk, which would probably call itself "Novorossiya" or "New Russia," as various propagandists are calling for, in honor of what all of southern Ukraine extending as far west as Odessa was called in the late1700s when Catherine the Great gained control of that area from the Ottoman Turks. This is the likely outcome, hence, from Luhansk to Lugansk to Novorossiya.
If that is the case, expect them unlike Crimea not to be annexed by Russia, but to join Transdniestria, South Ossetia, Nagorno-Karabakh, and Abkhazia as self-ruling de facto independent states supported by Russia, while unrecognized by pretty much all, or nearly all, the world. I would note that this is not necessarily a bad outcome for them as these states have generally performed about as well economically as their neighbors, and it really is the case that the main export from the area is steel and coal to Russia.
Even though the current rebel leaders are self-appointed, supposedly there will be elections in September. We shall see. As it was, people were not allowed to vote in the Ukrainian presidential election in either of them.