The official declined to identify the countries that are sending Ukraine weapons.
The penalties hit Russia's largest bank and many state-owned oil companies.
This is an important moment for the Obama presidency and for contemporary world history.
The Speaker called the invite a "signal of our steadfast commitment" to the Ukrainian people.
Sanctions expected to impact Russia's financial, energy and defense sectors.
The footage showed volunteer soldiers with swastikas and the “SS runes” of Hitler’s elite corps
Russia’s prime minister warned the country's airspace could be closed to airlines.
Ukraine, pro-Russian rebels held back fighting after more than four months of bloodshed.
The deal comes as NATO was set to outline new troop movements in the area.
The N.H. senator wants Obama to use the NATO summit to rally support for Ukraine.
Sergey Lavrov called Ukrainian statements "a blatant attempt to derail all the efforts."
The State Department had called the deal "completely inappropriate."
Senior Democrats want Obama to announce increased military aid for Ukraine.
Obama said new penalties target areas important to Putin and people "close to him."
The alliance continues to ensure the peace and prosperity on the European continent.
A joint session will show congressional support, a bipartisan group wrote.
The number, 30 percent, is up from the approximately 20 percent who said the same in April.
Sens. Menendez and Corker said it is "critically important" for President Poroshenko to speak.
House Armed Services members will receive a closed-door briefing on ISIS.
He said the U.S. and Europe would "broaden and deepen" measures, downplaying a cease-fire.
Obama met with world leaders on the sidelines of the NATO conference in Wales.
“It is very much in our interest," said the senator, back from a trip to Ukraine and Iraq.
Ukraine's president is expected to update leaders on peace talks.
“Everything is on the table right now," said Ambassador to the EU Anthony Gardner.