I think we are in a highly critical stage right now which might lead to a further escalation on both national and global level.
According to Kuchma, in Minsk the Separatists threatened to begin a full-scale military attack, if their demand for a one-sided ceasefire by the Ukrainian side is not met. At the same time, they have substantially increased the military pressure. There have been intensive fights yesterday, the Ukranian forces have lost ground, so it seems to be no empty threat. However, their demands are unacceptable to the Ukrainian side. So if the separatists do not chicken out and indeed take that violent outside option, we will be back to the July-August intensity of warfare.
On a global level, the attack on Mariupol has raised concerns in the West, opening a timeframe for a decision towards harsher sanctions against Russia. As we all know, the EU usually needs some time to agree on sanctions, yet currently there are plans on the table. This is due to the attack on Mariupol last week. Meanwhile, even Medvedev threatened "unlimited retaliation" for a next round of 'hard' economic sanctions (e.g. cutting Russia off from SWIFT).
http://korrespondent.net/ukraine/347...htabnoi-voinoi
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