/ Is this the first clear and open signal that Poland makes preparations for war with Russia?
None of this has to do with fascists or protecting russian speakers. That's just propaganda to gain popular support. The issue is not even political or diplomatic. It's totally strategic, and Putin can't afford to back down.
A huge part of the Ukrainian economy is based on Soviet / Russian standards - much of the production is geared to the needs of the remainder of the old soviet block - to try to break this overnight and link it to the EU's of the US standards will cripple what remains of Ukrainian production. The Oligarchs sitting on these assets know this - the vast majority of them in the Donbass region have little choice but to continue to produce the shoddy goods that Russia needs; That was Yanukiewich's crumbling power base. The remaining Oligarchs wanted a part of the action and so mounted the so called coup - but they misfired and now there is that god awful mess. Nasty pieces of work have taken power in the name of freedom in Kiev; those in Donbass do nt want these weirdos to rule over them - what to do? Use Crimea as bait to bring in their cousins from across the border - after all they are Russians together - the assumed threat to the Russian fleet is a good excuse to bring in cover and so the eastern Oligarchs can still hang n their assess and continue to produce crap, leave the workers in the poverty they are in and still reap benefits. Where does the EU and the US fit into all of this? No where! The EU / US 'oligarchs' (yes !!) also want to get their mitts on the remaining Ukrainian assets and produce cheap steel, machinery and ofcourse the raw materials.
All this talk of war and invasions is all palin bull ****. All it has to do with is the various thieves fighting over the spoils. All common and honest Ukranains should stay indoors, lock the windows and watch DVD;'s until these nastier on both sides work out how they divide the spoils.
Invasion of Poland?? Don't make me laugh! All that trembling about Russian take over is the stuff of fantasies - that was in the '50's, and that is Georgia; The Poles should have been awake 10 years ago and worked Ukrainians as partners - but they did not - so now its too late; just like the EU and its mealy mouthed support. And Hague of UK has already said that his Oligarchs do not allow him to say boo to Russia...
So, what now? Let the Ukranians grow up and sort themselves out - I suspect, unfortunately that this will take ten years