ISTANBUL (Reuters) – Turkish President Tayyip Erdogan told U.S. President Joe Biden on Thursday it was important for Ankara to maintain dialogue with both Ukraine and Russia to prevent their conflict from worsening. Erdogan also told Biden in a phone call that Turkey’s facilitator role in trying to find a solution to the conflict was important, according to a statement from his office. NATO member Turkey, which shares a maritime border with Russia and Ukraine in the Black Sea, has good relations with both countries. It has called Russia’s invasion unacceptable although it opposes sanctions aga…