President Obama addressed the Ukraine crisis today at the White House while meeting with Israeli Prime Minister Benjamin Netanyahu.

Amb. Power: 'Russian Mobilization Is a Response to an Imaginary Threat'

The president was asked what leverage he believes he has over Russian President Vladimir Putin, and if he is concerned about reports of Russian forces in the Crimean Peninsula.

“I think the world is largely united in recognizing the steps Russia has taken are a violation of Ukraine’s sovereignty, Ukraine’s territorial integrity, that they’re a violation of international law,” he said.

President Obama vowed to continue diplomatic efforts and said the U.S. government is looking into economic steps that would "isolate" Russia. Preparations for the G8 summit have been suspended. 

“The strong condemnation that is received from countries around the world indicates the degree to which Russia’s on the wrong side of history on this,” he said, adding that the United States “strongly” supports the interim Ukrainian government.

Secretary of State John Kerry will travel to the Ukrainian capital of Kiev to offer economic aid, the president said. 

Obama also called on Congress to work with his administration in order to preserve the principle that "no country has the right to send in troops to another country unprovoked." 

More on the crisis in Ukraine from Fox News:

Bolton: Putin Wants to Negotiate 'With His Foot on Ukraine's Neck'

Powers on GOP Criticism: 'They Didn't Call Bush Weak When Russia Invaded Georgia'

FLASHBACK: Obama Mocks Romney for His Concerns About Putin, Russia