Rather than changing his course after Moscow redrew the borders of Europe by force, Obama doubled down. Despite bipartisan consensus in favor of selling lethal defensive weapons to Ukraine, and vocal support from his own administration officials (including Joe Biden and Hillary Clinton), Obama repeatedly refused to authorize the sales.

Instead of anti-tank weapons, the Ukrainians defending their territory from Russian invasion received hot blankets and canned goods from the Obama administration. At the same time, Obama asserted that the Ukraine conflict had “no military solution.” With these words—and more importantly, these actions—he was perceived by some on the Russian side as accepting the Kremlin’s sphere of influence in Ukraine.

Despite my warnings, the Obama administration also essentially turned a blind eye to Russian meddling in Georgia’s 2012 elections. The result was devastating not only for Georgia, but for American interests: A Kremlin-backed oligarch (who has substantial interests in Russian energy firm Gazprom) ascended to power in a strategic U.S. ally. Moreover, Russia’s meddling in Georgia’s elections functioned as a proving ground for information operations later used in the United States. To his credit, Obama accepted this reality in 2016, when he expelled dozens of Russian diplomats, but this response was too little, too late.

By contrast, Trump authorized the sale of lethal defensive weapons to both Ukraine and Georgia in 2017. The Trump administration went beyond the congressional mandate in sanctioning Russian authorities involved in the annexation of Crimea. Earlier this year, the United States imposed the harshest sanctions yet, targeting Russian oligarchs as well as government officials.

(http://www.autoadmit.com/thread.php?thread_id=4030261&forum_id=2#36459744)