What bunkum.
The threat of Russian colonialism, as you describe that country's attempts to protect itself, materialised in 2008. That's when Putin finally lost patience with the four years of determined US attempts to expand NATO to Russia's borders at Georgia and Ukraine and launched a punitive attack on Georgia to discourage them from joining NATO.
Obama only became president in 2009 so had no influence on the matter.
The responsibility for prompting Russia's defensive military actions rests entirely with George W Bush, president from January 2001 to January 2009, and his immediate predecessors.
When Russia conceded defeat in the Cold War, disbanded the USSR and made overtures to join Europe as a full peaceful partner, the Western and especially US response should have been to disband NATO and welcome them, since NATO was only formed expressly to defend against the USSR threat, which no longer existed.
Instead the ever warlike USA chose to oppose Russian friendship and Europe's attempts to welcome them, then go on to instead expand NATO and reinvent it as an organisation to enforce western style democracy by the use of extreme violence and propaganda lies like the fabricated "Arab Spring".
Just look at what the USA and the new NATO has achieved with this. Unending utter chaos in Iraq, Libya, Afghanistan, Syria et al. Driving Russia eastwards to become a real rather than imaginary threat as they increasing join with China and the world increasingly splits into two factions.
And now the USA reneges on its long held "One China" policy as it tries to creat a new cold war with China with this kind of "double speak":
"On May 23, 2022, U.S. President Joe Biden announced the United States would intervene militarily if China were to unilaterally invade Taiwan. - - - - Biden later stated that his remarks did not represent a change from the status quo and the U.S. position of
strategic ambiguity. Secretary of State
Antony Blinken also delivered a speech in which he stated that U.S. policy regarding the island had not changed, and the State Department updated its fact sheet to reinstate a line stating "we do not support Taiwan independence."
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