In the Ukrainian capitol Kiev, protesters prepare for what they say will be a mass anti-government rally on Sunday.<br/> <br />Demonstrations that began weeks ago over the government's decision to scrap a European trade deal have morphed into something else...<br/> <br />…an all-out movement against President Viktor Yanukovich and his administration.<br/> <br />(SOUNDBITE) (Ukrainian) IVAN, ANTI-GOVERNMENT DEMONSTRATORS SAYING:<br/> <br />"I think this rally will be much bigger tomorrow than today because people continue arriving. They have left their jobs, their families and their homes."<br/> <br />The protests have led to sometimes violent clashes with riot police…<br/> <br />…and now the threat of U.S. sanctions if the violence continues.<br/> <br />U.S. Senator John McCain -- a leading Republican voice on foreign policy -- spent time with opposition leaders on Saturday.<br/> <br />(SOUNDBITE) (English) U.S. SENATOR JOHN MCCAIN, SAYING:<br/> <br />"I am having very good meetings and I am looking forward to meeting with our op