(Reuters) – Two of the Big Four accounting firms KPMG and PricewaterhouseCoopers LLP (PwC) on Sunday said they will no longer have a member firm in Russia due to the country’s invasion of Ukraine. The auditing and consultancy giant KPMG said its Russia and Belarus firm will leave the KPMG network, a move that will affect over 4,500 partners and staff in Russia and Belarus. Separately, PwC agreed PwC Russia will leave its network. The firm has operated in Russia for more than 30 years, and has 3,700 partners and staff there, it said. “As a result of the Russian government’s invasion of Ukraine …