European leaders are meeting to discuss sanctions against Russia over Ukraine . David Clark says Putin acted without thought and Russia 's economy is weak . Clark says Russia has vulnerabilities Europe can leverage -- and should do so . TL;DR The U.S. will impose new economic penalties on Russia, President Obama said Thursday in a speech at the White House.
European leaders are meeting to discuss sanctions against Russia over Ukraine . David Clark says Putin acted without thought and Russia 's economy is weak . Clark says Russia has vulnerabilities Europe can leverage -- and should do so . He says gesture diplomacy will not be enough , otherwise the talks will be wasted .