In a case closely watched by the IMF and Western investors, a London appeals court gave the green light Tuesday to Ukraine’s government to sue Igor Kolomoisky and his main business partner for $3 billion.

In a case closely watched by the IMF and Western investors, a London appeals court gave the green light Tuesday to Ukraine’s government to sue Igor Kolomoisky and his main business partner for $3 billion. Kolomoisky is appealing the decision of the Court of Appeal in London and Wales. But, lawyers say the U.K. Supreme Court rarely overturns decisions of the Appeals court. Without setting a trial date, the Appeals court told Kolomoisky and his business partner, Gennadiy Boholyubov, to prepare their defense by the end of next month.