Ukraine is prepared to pay arrears to Russia for gas once it has a contract with Moscow and will take the country to court if it refuses to sign, Ukrainian Prime Minister Arseny Yatseniuk was quoted as saying by a German newspaper on Saturday. Ukraine told Russia on Friday a $786 million partial payment on a bill that Russia says could exceed $5 billion by next week was on its way to Moscow. That averted an immediate threat that Russia would stop supplying the former Soviet republic with gas if it fails to make advance payments. In an interview with Germany's Frankfurter Allgemeine Zeitung, Yatseniuk said Ukraine's only demand was to get a "fair contract" and gas should not be used as a "political weapon".