By Jonathan Saul and Stine Jacobsen (Reuters) – The world’s biggest shipping lines, MSC and Maersk, on Tuesday suspended container shipping to and from Russia, deepening the country’s isolation as its invasion of Ukraine sparks an exodus of international companies. The West has imposed heavy restrictions on Russia to close off its economy from the global financial system, pushing companies to halt sales, cut ties and dump tens of billions of dollars’ worth of investments. The MSC and Maersk moves mean that Russia – the world’s eleventh-largest economy and supplier of one-sixth of all commoditi…