WATCH CNN: President Obama will deliver a statement on the situation in Ukraine at 11:30 a.m. ET today at the White House press briefing room, the White House says.

His comments come a day after a Malaysia Airlines jet crashed in eastern Ukraine.

Preliminary classified U.S. intelligence analysis has concluded that the missile that hit Flight 17 most likely was fired by pro-Russian separatists inside eastern Ukraine, according to a U.S. defense official with direct access to the latest information.

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