The Swiss government ordered the freezing of the assets of 20 Ukrainians, including the ousted President Viktor Yanukovich and his son. The measures were announced as the crisis in Ukraine worsened there.Ukraine's new prime minister Arseny Yatseniuk on Thursday accused Yanukovich of stripping state coffers bare and said $37 billion of credits had disappeared. In the past three years $70 billion had disappeared into offshore accounts.Swiss authorities said the asset freeze would come into force on Friday at noon.The prosecutor's office in Geneva said it had also launched a money laundering investigation against Yanukovich and his son.