It has just allowed 5,000 of its soldiers to be encircled by the pro-Russian rebels at a place called Debaltseve. The Ukraine government denies the encirclement, but informed observers are saying it's true.
Looking at hasty ongoing Ukrainian efforts at this very moment, it seems not impossible that [the Ukraine Army] will be able to breach the de facto pocket [at Debaltseve], which holds since 15 hours [Feb 10], in the coming hours. However if it does so, using all its reserves in the area, it will only be a question of hours or days, before even stronger Russian army reinforcements will push back the Ukrainian army forces and re-close the pocket. [...][Up to] 5,000 [Ukrainian] troops are besieged and the outlook is gloomy. [Source]
(1) Defence.pk : Civil War in Ukraine -- forum, including many pro-Russian contributors.
(2) DefenceTalk.com : Ukraine Crisis -- forum, including many translations of Russian sources; tending to professional-level analysis.
(3) ConflictReport.info Up-to-date news and commentary from a pro-Ukraine / pro-NATO perspective by a German conflict intelligence analyst. (This person does some professional-level "geolocating", i.e. comparing actual locations in the vast amount of video footage released daily by both sides to Google Maps to confirm actual locations of the two sides, thereby slicing past disinformation by both sides about who controls what -- he apparently "called" the fall of the Donetsk airport many days before the Kiev government admitted it, using this technique).
(4) Kyiv Post -- English-language newspaper and very pro-Ukraine.
A disproportionate share of what military successes Ukraine has had are -- this is amazing to me -- due to the Azov Battalion (also called the Azov Regiment), a non-professional volunteer formation.
Azov is composed totally of non-(current-)military volunteers, including foreigners (Croatians, Finns, Norwegians, British, French, Italians are active in it). It grew up around Right Sector's (see #197) armed political paramilitary group that existed before the war (see the screenshot in #197 #197)), dozens of whose members were killed in the February 2014 Kiev (see post-197), dozens of whose members were killed in the February 2014 Kiev streetfighting in February 2014 in Kiev that brought down the conniving pro-Russian government at the time., dozen, sostreetfighting that brought down the conniving pro-Russian government at the time.You can see some of these men pre-war in the screenshot in #197197#197. The video itself has been purged from Youtub
Its numbers are secret, but the Ukrainian government "approved" bringing this formation to 12,000 volunteers last year.
After a few weeks of steady losses for the Ukrainian side, here is what the Azov Battalion has done in the past 36 hours as of this writing:
[On February 10th, 2015,] Regiment Azov surprised virtually the whole world when it [...] started a counteroffensive east and north east of Mariupol mostly along the coastline of the Azov Sea.
The effectiveness of the Azov Battalion proves that morale and feeling of righteous purpose matter a lot, not just towards military effectiveness in a war, but probably towards any endeavor, any job, anything.