Galway businessman Declan Ganley made his money by investing in timber in Latvia and Russia after the fall of communism before selling out to George Soros in the mid-1990s.
Last year, he launched a multi-million euro legal action against the Mexican state. It follows claims his company, Rivada Networks, was “stitched up” while bidding to build a $7bn (6.2bn) mobile network in the country. Billionaire tech investor Peter Thiel was one of those who reportedly put 50m into the company in 2015, valuing it at 500m. Ganley owns almost 50pc.