LONDON—The euro edged up on Friday following Thursday’s sharp declines in the wake of Russia’s invasion of Ukraine. The dollar edged lower against most currencies as markets walked back some of the tumultuous moves from the previous day. Russia’s rouble also recovered some ground, trading at around 83.5 per dollar, having hit a record low of 89.986 the day before. “FX markets are slightly calmer this morning as the world tries to come to terms with war in Europe,” Chris Turner, Global Head of Markets at ING, said. The size and prominence of the sanctions on Russian banks and the size of their FX deposits may take some time to percolate through, he said. The United States, the European Union, and some other countries responded to Russia’s invasion of Ukraine with a wave of sanctions impeding Russia’s ability to do business in major currencies along with sanctions on banks and …