Group of Seven nations are studying ways to tighten the screws on banks that help Moscow evade sanctions, Bloomberg reports. According to the newspaper, the Group of Seven countries and the European Union are exploring ways to tighten the screws on those banks that help the Russian Federation avoid sanctions imposed because of Russia’s armed aggression in Ukraine. The newspaper reports that some are exploring measures that would target third-country creditors who use the Bank of Russia’s SWIFT-like financial messaging system to circumvent trade restrictions. The discussions are taking place ah…