Ukraine is considering alternative ways to use its transit network should it fail to strike a new gas transit deal with Russia’s gas giant Gazprom when the current one expires at the end of 2019, Ukraine’s deputy minister for foreign affairs, Olena Zerkal, said on Thursday. “We’ll have to think about making the network more commercially viable -- such as through reverse flow. We need a Plan B, a Plan C and a resilience plan,” S&P Global Platts quoted Zerkal as saying at a gas conference in Berlin. Ukraine aims…