The Nuclear Security Summit draws to a close in the Hague, with world powers agreeing to take steps to prevent militant groups from obtaining a nuclear bomb.<br/> <br />But much of the focus of the two day talks was on Russia and the future of Ukraine.<br/> <br />In his concluding remarks, U.S. President Barack Obama says that Russia's annexation of Crimea was not a quote "done deal," and is not recognized by the international community.<br/> <br />While saying he would like to see a diplomatic solution in Ukraine, he warned of further sanctions if Russia moves into other parts of the country.<br/> <br />(SOUNDBITE) (English) U.S. PRESIDENT BARACK OBAMA SAYING:<br/> <br />"What I announced, and what the European Council announced, is that we were consulting and putting in place the framework, the architecture for additional sanctions additional costs, should Russia take this next step."<br/> <br />He spells out the consequences if Russia continues to move beyond its borders.<br/> <br />(SOUNDBITE) (English) U.S. PRESIDE