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(CNN) – Russian President Vladimir Putin's forces tightened their grip on newly-annexed Crimea Thursday by storming another Ukrainian military base.
Here in the U.S., President Barack Obama responded to the land grab with a second set of sanctions aimed at Russian and pro-Russian officials in Crimea, and a bank.
"These sanctions would not only have a significant impact on the Russian economy, but could also be disruptive to the global economy. However, Russia must know that further escalation will only isolate it further from the international community," Obama said Thursday.
Russia immediately retaliated with its own sanctions against nine U.S. officials: House Speaker John Boehner, Senate Majority Leader Harry Reid, Senators John McCain, Robert Menendez, Mary Landrieu and Dan Coats, and White House advisers Ben Rhodes, Dan Pfeiffer and Caroline Atkinson.
All are now banned from traveling to Russia, which doesn't seem to bother them much.
"I guess this means my spring break in Siberia is off," McCain tweeted.
But what is the reality on the ground right now, and will these sanctions change anything on either side? CNN's Nick Paton Walsh reports live from Simferopol, Crimea.